build: Revert "Disable test scripts on windows"

This reverts commit d2b99e3b.

It turned out that the test failures under mingw were caused by a regression in wine 7.5, possibly: https://bugs.winehq.org/show_bug.cgi?id=52743

Now that the latest wine package based on wine 7.9 has no issues with running those test scripts, this enables them again in the build process.

Fixes: #1371 (closed)

Checklist

• Commits have Signed-off-by: with name/author being identical to the commit author
• Code modified for feature
• Test suite updated with functionality tests
• Test suite updated with negative tests
• Documentation updated / NEWS entry present (for non-trivial changes)
• CI timeout is 2h or higher (see Settings/CICD/General pipelines/Timeout)

Reviewer's checklist:

• Any issues marked for closing are addressed
• There is a test suite reasonably covering new functionality or modifications
• Function naming, parameters, return values, types, etc., are consistent and according to CONTRIBUTION.md
• This feature/change has adequate documentation added
• No obvious mistakes in the code