Reproduction steps:
1. Create a new project
2. Make sure Use new Hierarchy window is enabled in Unity > Settings…
3. Click on Hierarchy search icon and add any search filter
4. Click on Hierarchy search icon and add another search filter with a long title
5. Make sure that search filter title is longer than the search field and observe

Actual result: Search filter goes slightly outside of the search field bounds and its icon becomes unreadable
Expected result: Search filter stays within search field bounds and its icon is clearly visible

Reproducible with: 6000.3.2f1, 6000.4.0b1, 6000.5.0a3

Reproduced on: macOS Tahoe 26.1 (M4)