fix(shim): Run JAR file from app's root directory

[niheaven]

Description

For Java apps, the working directory should be apps' root directory since config files are normally located beside .jar.

Checklist:

• I have read the Contributing Guide.
• I have ensured that I am targeting the develop branch.
• I have updated the documentation accordingly.
• I have updated the tests accordingly.
• I have added an entry in the CHANGELOG.

[niheaven]

I'm not sure if .py or other executives need such tweaks.

[rashil2000]

Why WSL check?

[niheaven]

WSL couldn't recognize D:/aaa/bbb-type path, since it uses /mnt/D/aaa/bbb, while Cygwin could access D:/aaa/bbb correctly.

[niheaven]

Some use cases: ScoopInstaller/Main#5702, ScoopInstaller/Main#5704

[rashil2000]

I recognize the usefulness of this feature, but still don't get the WSL part - do we really need to handle the use case where bash scripts (meant to run in Git Bash etc.) would be run inside WSL Bash? Wouldn't that lead to additional problems (w.r.t to finding the correct binaries like java.exe etc.)?

[niheaven]

WSL shares PATH with the host machine, so if you install Java and can run in pwsh, you can run it in WSL too. That's why we should consider such cases.