magento2: Product attributes product_type, type_id cannot be created/edited form admin

Preconditions (*)

1. Magento 2.3.5-p1

Steps to reproduce (*)

1. IF product attributes with following code does not exist product_type or type_id then attempt to create any of them
2. ELSE edit any of them and change anything

Expected result (*)

• Attribute is not saved. Error message is shown
• text: Code “product_type” is a reserved key and cannot be used as attribute code.
• text: Code “type_idis” a reserved key and cannot be used as attribute code.

Actual result (*)

1. Either of following messages appear An attribute with this code already exists. OR An attribute with the same code (product_type) already exists.

It’s due to following line of code https://github.com/magento/magento2/blob/39012d4ea79157cb12eef348cc3448d955c0ecc5/app/code/Magento/Catalog/Controller/Adminhtml/Product/Attribute/Validate.php#L130 implemented in https://github.com/magento/magento2/commit/ca0da34ee2691bfaca1c74d94a0db33377d4e54c#diff-9ff38a88c1abf86286f77b64c8bc9b38 and https://github.com/magento/magento2/commit/b9d13e69c4928a0b6d740845bed305a399a42fd5#diff-9ff38a88c1abf86286f77b64c8bc9b38

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Please provide Severity assessment for the Issue as Reporter. This information will help during Confirmation and Issue triage processes.

• Severity: S0 - Affects critical data or functionality and leaves users without workaround.
• Severity: S1 - Affects critical data or functionality and forces users to employ a workaround.
• Severity: S2 - Affects non-critical data or functionality and forces users to employ a workaround.
• Severity: S3 - Affects non-critical data or functionality and does not force users to employ a workaround.
• Severity: S4 - Affects aesthetics, professional look and feel, “quality” or “usability”.