Text selection/highlighting is not rendered properly when selecting/highlighting Package description that has multiple lines in the Package Manager window

Steps to reproduce:

1. Create a new Unity project using the Universal 3D template
2. Open the Package Manager window (Window > Package Management > Package Manager)
3. Select the "AI Navigation" package
4. Try selecting/highlighting text in the description by click and dragging 
5. Observe the text selection/highlight

Actual results: Only parts of the description is selected/highlighted

Expected results: The whole description is selected/highlighted

Reproducible with versions: 6000.3.6f1, 6000.3.7f1, 6000.4.0b7, 6000.5.0a6

Not reproducible with versions: 6000.0.66f1, 6000.3.5f1

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

Notes:

• Also reproduces with triple click "select all"