Search object selection indicator disappears after entering Play mode

Steps to reproduce:

1. Open the attached project
2. Open the test Scene
3. Open the Search window
4. Select all of the search results
5. Enter Play mode
6. Observe that the selection indicator disappears
7. Exit Play mode
8. Disable one of the objects using the Enable column

Actual results: All of the previously selected objects become disabled

Expected results: Selection indicator does not disappear when entering Play mode

Reproducible with versions: 6000.5.0a9, 6000.5.0b3, 6000.6.0a3

Not reproducible with versions: 6000.0.71f, 6000.3.11f1, 6000.4.3f1, 6000.5.0a8

Tested on (OS): macOS 26.3.1, Windows 11