Revert "Shift RoundedCornerOverlay to Display window hierarchy"

This reverts commit b212cbaca3051d239c95e329380047ced0ff9632.

Reason for revert: DPU SysMMU Page Fault

Bug: b/231553814

Change-Id: Ida1aed955c0d02461bc0cb55278a05489cd6b068
1 file changed