Cleanup and improve CI checks

[msfjarvis]

📢 Type of change

• Bugfix
• New feature
• Enhancement
• Refactoring
• Dependency updates

📜 Description

• Fixes instrumentation test job name
• Cleans up and extracts the JS used for checking changed files
• Adds basic compile checking for both build types
• Fixes a lingering Timber use missed in Replace Timber with logcat #1509

💡 Motivation and Context

Our builds do not check the nonFree source set which allowed a compile error to slip through to develop and break snapshot deployment.

💚 How did you test it?

Verified nonFreeDebug builds correctly and the new JS code executes correctly in a REPL

📝 Checklist

• I formatted the code ./gradlew spotlessApply
• I reviewed submitted code
• I added a CHANGELOG entry if applicable

🔮 Next steps

📸 Screenshots / GIFs