“Always Included Shaders” list container border is missing when element count is manually set to 0 in Graphics Project Settings

Steps to reproduce:
1. Create new Unity project using Universal 3D Template
2. Go to Edit > Project Settings > Graphics
3. In Shader Settings expand “Always Included Shaders” foldout
4. Change element count from 7 to 0
5. Observe the elements list

Actual results: When the “Always Included Shaders” count is manually changed to 0, the list displays the "List is empty" text without a surrounding border/box, leaving the text visually uncontained and inconsistent with other list controls in the same window

Expected results: The “Always Included Shaders” list should display a bordered container around the "List is empty" text, matching the visual style of the Shader Constant Defines list above it, which correctly renders a bordered box even when empty

Reproducible with versions: 6000.0.78f1, 6000.3.19f1, 6000.5.3f1, 6000.6.0b3, 6000.7.0a2

Tested on (OS): macOS Tahoe 26.5.1 (M1)