Notify remote rotation with fixed rotation transform

Divider and PipManager in SystemUI needs the signal to position the
corresponding windows.

Since update-orientation and apply-rotation could be asynchronous,
the actual cleanup of fixed rotation transform is split to execute
with applying display rotation.

Bug: 151727009
Test: atest DisplayContentTests#testApplyTopFixedRotationTransform
Change-Id: I49b5a4951c04e52b7880ecd7e21a91f3061d2379