fix(fullscreen border): Apply corner radius according to the display

Register DisplayListener and update the corner radius of the fullscreen
magnification border in onDisplayChanged.

Bug: 335113174
Test: atest FullscreenMagnificationControllerTest
Flag: com.android.systemui.update_corner_radius_on_display_changed
Change-Id: I317c6181629d8f9593f11a8ae835933183fb2ab0
3 files changed