Sorting icons are tiny and misaligned in Import Activity window

Unity: Asset - Database

6.3.X

6.0.X

6.5.X

6.4.X

Changed Import Activity sorting arrow to be center aligned to be more consistent with other windows.

Reproduction steps:
1. Create a new project
2. Window > Analysis > Import Activity
3. Observe triangle sorting icons

Actual result: Icons are tiny and misaligned with sections
Expected result: Icons are not tiny and are aligned with sections

Reproducible with: 6000.0.65f1, 6000.3.4f1, 6000.4.0b4, 6000.5.0a4

Reproduced on: macOS Tahoe 26.2 (M4)