SurfaceControl: Add ignoreCornerRadius and ignoreShadows APIs to SurfaceControl

These APIs will indicate to surfaceflinger that it does not need to round corners and draw shadows for the surface

Bug: 375624570
Flag: com.android.window.flags.ignore_corner_radius_and_shadows
Test: atest libsurfaceflinger_unittest

Change-Id: I1229d3f8f79a190db0ef4f796fbbe06f8c0de1c2