jaeger-ui: Build does not work on Windows

What happened?

Bug: Currently, due to limited maintainer’s support for windows os, there are a few glitches inside the package.json due to which the development installation of jaeger UI fails.
Typo: The readme.md file suggests changing the proxyConfig.target inside the package.json file, though, it needs to be changed inside the vite.config.ts.

Steps to reproduce

git clone the project into a Windows OS
run yarn
it would show an error after the installation of the required packages. The error says $npm_execpath' is not recognized as an internal or external command

Expected behavior

There should be a Troubleshooting section inside the readme.md (or any other place) file which could answer the possible fix for such issues.

For example, the issue above can be resolved by manually changing the $npm_execpath to \"%npm_execpath%\"

Relevant log output

$ lerna run --stream --sort prepublishOnly
lerna notice cli v7.1.3
lerna info versioning independent

> @jaegertracing/plexus:prepublishOnly

@jaegertracing/plexus: yarn run v1.22.4
$ $npm_execpath build
@jaegertracing/plexus: '$npm_execpath' is not recognized as an internal or external command,
@jaegertracing/plexus: operable program or batch file.
error Command failed with exit code 1.
@jaegertracing/plexus: info Visit https://yarnpkg.com/en/docs/cli/run for documentation about this command.