Long Property names are not truncated in the Add Property dropdown in the Animation window when the Long Property name does not fit

Steps to reproduce:

1. Create a new project using the Universal 3D template
2. Import the provided script "RandomScript.cs"
3. Create a new Cube GameObject (GameObject > 3D Object > Cube)
4. Select the newly created Cube GameObject in the Hierarchy window
5. Open the Animation window (Window > Animation > Animation)
6. Dock the Animation window
7. Create a new Animation
8. Repeat step 4
9. Add the provided "RandomScript.cs" Script to the Cube GameObject
10. Click the "Add Property" button in the Animation window
11. Expand the Random Script foldout
12. Observe the Property with the long name "Random Int Random Int...."

Actual results: The Properties that have long names do not fit in the dropdown and are not truncated

Expected results: The Properties with long names that do not fit in the dropdown should be truncated

Reproducible with versions: 6000.0.68f1, 6000.3.10f1, 6000.4.0b9, 6000.5.0a7

Tested on (OS): MacOS Silicon Tahoe 26.2, Ubuntu 24.04