Don't create unexpected display cutout or rounded corners

Should not load cutout and rounded corner when the mInitialDisplayCutout
and mInitialRoundedCorner are null when setForcedSize() is called.
Otherwise, it will accidentally create the cutout/rounded corners of the
default display on other display.

Bug: 230500488
Test: atest DisplaySizeTest#testSizeRangesAfterSettingDisplaySize
Change-Id: Ied2ad194cf2a22e4ac3fe2eb9d6d474e3c9b7578
1 file changed