Use activity rotation if hasFixedRotationTransform and letterboxed

Display rotation on task level and display level is mismatched with
letterboxed bounds if hasFixedRotationTransform is true. This causes
landscape app with fixed aspect ratio letterboxing to start in size
compat mode.

Bug: 334076352
Test: atest SizeCompatTests
      Start non-resizable landscape fixed aspect ratio app folded
Change-Id: I0d4c90d1d6897bdbf61a2680bac0468e5a68ee49