azure-cli: Installation of extension(s) is not working due to parsing error of extensionCommandTree.json: json.decoder.JSONDecodeError: Unexpected UTF-8 BOM (decode using utf-8-sig): line 1 column 1 (char 0)

Describe the bug

When trying to install extensions, just getting error

The command failed with an unexpected error. Here is the traceback:
Unexpected UTF-8 BOM (decode using utf-8-sig): line 1 column 1 (char 0)

This happens both locally (using e.g. docker run -it --rm mcr.microsoft.com/azure-cli) and at Azure DevOps.

Related command

az account subscription list (even without logging in)

Errors

The command failed with an unexpected error. Here is the traceback:
Unexpected UTF-8 BOM (decode using utf-8-sig): line 1 column 1 (char 0)

Issue script & Debug output

aba60738e9d4:/# az account subscription list
The command failed with an unexpected error. Here is the traceback:
Unexpected UTF-8 BOM (decode using utf-8-sig): line 1 column 1 (char 0)
Traceback (most recent call last):
  File "/usr/local/lib/python3.11/site-packages/requests/models.py", line 971, in json
    return complexjson.loads(self.text, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/json/__init__.py", line 335, in loads
    raise JSONDecodeError("Unexpected UTF-8 BOM (decode using utf-8-sig)",
json.decoder.JSONDecodeError: Unexpected UTF-8 BOM (decode using utf-8-sig): line 1 column 1 (char 0)

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/local/lib/python3.11/site-packages/knack/cli.py", line 233, in invoke
    cmd_result = self.invocation.execute(args)
                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/site-packages/azure/cli/core/commands/__init__.py", line 589, in execute
    parsed_args = self.parser.parse_args(args)
                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/site-packages/knack/parser.py", line 261, in parse_args
    return super().parse_args(args)
           ^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/argparse.py", line 1869, in parse_args
    args, argv = self.parse_known_args(args, namespace)
                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/site-packages/azure/cli/core/parser.py", line 281, in parse_known_args
    self._namespace, self._raw_arguments = super().parse_known_args(args=args, namespace=namespace)
                                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/argparse.py", line 1902, in parse_known_args
    namespace, args = self._parse_known_args(args, namespace)
                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/argparse.py", line 2117, in _parse_known_args
    stop_index = consume_positionals(start_index)
                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/argparse.py", line 2073, in consume_positionals
    take_action(action, args)
  File "/usr/local/lib/python3.11/argparse.py", line 1978, in take_action
    action(self, namespace, argument_values, option_string)
  File "/usr/local/lib/python3.11/argparse.py", line 1241, in __call__
    subnamespace, arg_strings = parser.parse_known_args(arg_strings, None)
                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/site-packages/azure/cli/core/parser.py", line 281, in parse_known_args
    self._namespace, self._raw_arguments = super().parse_known_args(args=args, namespace=namespace)
                                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/argparse.py", line 1902, in parse_known_args
    namespace, args = self._parse_known_args(args, namespace)
                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/argparse.py", line 2117, in _parse_known_args
    stop_index = consume_positionals(start_index)
                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/argparse.py", line 2073, in consume_positionals
    take_action(action, args)
  File "/usr/local/lib/python3.11/argparse.py", line 1962, in take_action
    argument_values = self._get_values(action, argument_strings)
                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/site-packages/azure/cli/core/parser.py", line 272, in _get_values
    value = super(AzCliCommandParser, self)._get_values(action, arg_strings)
            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/argparse.py", line 2506, in _get_values
    self._check_value(action, value[0])
  File "/usr/local/lib/python3.11/site-packages/azure/cli/core/parser.py", line 300, in _check_value
    use_dynamic_install = try_install_extension(self, args)
                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/site-packages/azure/cli/core/extension/dynamic_install.py", line 119, in try_install_extension
    _check_value_in_extensions(cli_ctx, parser, args, use_dynamic_install == 'yes_without_prompt')
  File "/usr/local/lib/python3.11/site-packages/azure/cli/core/extension/dynamic_install.py", line 150, in _check_value_in_extensions
    ext_name = _search_in_extension_commands(cli_ctx, command_str, allow_prefix_match=allow_prefix_match)
               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/site-packages/azure/cli/core/extension/dynamic_install.py", line 87, in _search_in_extension_commands
    cmd_chain = _get_extension_command_tree(cli_ctx)
                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/site-packages/azure/cli/core/extension/dynamic_install.py", line 38, in _get_extension_command_tree
    EXT_CMD_TREE.data = response.json()
                        ^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/site-packages/requests/models.py", line 975, in json
    raise RequestsJSONDecodeError(e.msg, e.doc, e.pos)
requests.exceptions.JSONDecodeError: Unexpected UTF-8 BOM (decode using utf-8-sig): line 1 column 1 (char 0)

Expected behavior

Extension installed fine and command that was asked done.

Environment Summary

{
  "azure-cli": "2.57.0",
  "azure-cli-core": "2.57.0",
  "azure-cli-telemetry": "1.1.0",
  "extensions": {}
}

Additional context

No response