pwsh 7.3 quoting rules compatibility

[ikappaki]

Hi,

could you please review patch to maintain compatibility with pwsh 7.3. It fixes #3588 based on #3590 by @shishini.

It uses the PSNativeCommandArgumentPassing = 'Legacy' flag as explained at https://stackoverflow.com/a/59036879.

A integration test was added for the same, powershell quoting tests updated to accommodate the above var, docs updated.

Thanks

• The commits are consistent with our contribution guidelines
• You've added tests (if possible) to cover your change(s)
• All tests are passing (eldev test)
• All code passes the linter (eldev lint) which is based on elisp-lint and includes
  • byte-compilation, checkdoc, check-declare, packaging metadata, indentation, and trailing whitespace checks.
• You've updated the changelog (if adding/changing user-visible functionality)
• You've updated the user manual (if adding/changing user-visible functionality)

[vemv]

Thanks much @ikappaki @shishini!

A MELPA snapshot will be available soon. The docs are being deployed as well