How to reproduce:
1. Create a new project
2. Open the Project window
3. Write “t:packagemanifest” in the Search Bar
4. Change the Search type to “All”
5. Shift Select 2 or more “package” files
6. Deselect the files
Actual result: “Unsaved changes detected” Warning is thrown
Expected result: Files are deselected and no messages are thrown
Reproducible with: 6000.0.73f1, 6000.3.14f1, 6000.4.4f1, 6000.5.0b5, 6000.6.0a3
Reproducible on: macOS 26.3.1 (M3 Pro), Windows 10
Not reproducible on: No other environment tested