[36/n] Create AppCompatSizeCompatModePolicy

Create the Policy component for Size Compat Mode.

Flag: EXEMPT refactor
Bug: 360865550
Test: atest WmTests:ActivityRecordTests
Test: atest WmTests:SizeCompatTests
Test: atest WmTests:TaskTests
Test: atest WmTests:TransparentPolicyTest

Change-Id: I8480ce987f96c56f652e5a55d9a1e8f4b574aeb3
9 files changed