Large Sprite with 9-slice and slice scale start stretching too early

Steps to reproduce:

1. Create a project with a large Sprite texture with large 9-slices values
2. Create a VisualElement in UI Builder using that Sprite background
3. Apply a small slice scale (e.g. 0.2)
4. Resize the VisualElement

Actual results: The slices starts stretching too early

Expected results: The slices should start stretching when the inner section is completely collapsed

Reproducible with versions: 6000.7 6000.6 6000.5 6000.3

Not reproducible with versions: 

Can’t test with versions: 

Tested on (OS): 

Notes:

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