Timeline UI elements overlap with the toolbar and property section when resizing a docked Animation window horizontally

Steps to reproduce:

1. Create a new Unity project using the Universal 3D template
2. Open the Animation window (Window > Animation > Animation)
3. Dock the Animation window
4. Create a new cube GameObject (GameObject > 3D Object > Cube)
5. Create a new Animation in the Animation window
6. Resize the docked Animation window horizontally to make it the smallest possible
7. Observe the Animation window

Actual results: The timeline elements overlap with the toolbar and property section

Expected results: No UI elements overlap

Reproducible with versions: 2021.3.51f1, 2022.3.62f1, 6000.0.50f1, 6000.1.6f1, 6000.2.0b5

Tested on (OS): macOS Silicon Sequoia 15.3

Notes:

• Especially noticeable with the Curve mode enabled