"Generate New" button has no min width in "Select Texture" window

Steps to reproduce:

1. Create a new project
2. Install AI packages (click the AI dropdown -> Agree to install button)
3. Create new material (Assets -> Right click -> Create -> Material)
4. In Inspector click on any of the Select buttons to open the Select Texture window
5. If the Select Texture window is not at min width, resize it to make it so

Actual results: "Generate New" button from AI packages doesn't have min width and overlaps with the slider

Expected results: All buttons in Select Texture top bar have min width

Reproducible with versions: 1.0.0-pre.7, 1.0.0-pre.20 (6000.2.0a10, 6000.3.0b2)

Not reproducible with versions: 

Can’t test with versions: 1.0.0-pre.6 ("The type or namespace name 'DownloadableAssetResult' could not be found"), 6000.2.0a9 ("This button is currently a placeholder..." is logged in console and no packages are imported)

Tested on (OS): Win11, macOS Intel 15.6.1

Notes:

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