Long Track Group names in Timeline overlap and block buttons making them unclickable

Steps to reproduce:

1. Create a new URP project
2. Select any GameObject from the Hierarchy
3. Go Window > Sequencing > Timeline
4. Click Create and save the assets
5. In the Timeline, click "+" and select "Track Group"
6. Double-click on it to rename and give it a long name
7. Try to click on the "+" button in the Track Group

Actual results: The "+" button is not intractable and clickable due to overlapping

Expected results: The "+" button remains interactive and clickable

Reproducible with versions: 1.8.12 (6000.3.19f1), 6.6.0 (6000.6.0b2, 6000.7.0a1)

Tested on (OS): macOS 26.5