Fixed incorrect rounded corner size

When top and bottom radius are different:
1. If rounded corners are shown by top and bottom overlays
   - Apply top radius to corners on top overlay
   - Apply bottom radius to corners on bottom overlay
2. If rounded corners are shown by left and right overlays
   - Apply top and bottom radius according to current rotation.

Fixes: 152004675
Test: atest ScreenDecorationsTest
Change-Id: I0251134cdd784fe3865d01ea6ad6cd2b7eee53db