Particle Effect window buttons overlap with other UI elements when opened in Editor

Steps to reproduce:

1. Create a new Unity project using Universal 3D template
2. Create a new Particle system (GameObject > Effects > Particle System)
3. Select the newly created Particle System in the Hierarchy window
4. Click the "Open Editor..." button in the Inspector window
5. Resize the window to be smaller or dock the window and resize
6. Observe the "Optimize" and "Remove" buttons

Actual results: The "Optimize" and "Remove" buttons overlap with other UI elements

Expected results: No UI elements overlap

Reproducible with versions: 2021.3.51f1, 2022.3.62f1, 6000.0.49f1, 6000.1.3f1, 6000.2.0b1

Tested on (OS): macOS Silicon Sequoia 15.3

Notes:

• This is very noticeable when there are more Particle Systems and the Particle System slider is all the way to the right
• Very noticeable when the window is docked and smaller than the minimum width for undocked window