Unify Aspect Ratio Logic in ActivityRecord

Use the existing aspect ratio logic when resolving
fixed orientation bounds.

Test: atest AppConfigurationTests AspectRatioTests SizeCompatTests
            ActivityRecordTests TaskTests CompatChangeTests
Bug: b/184772344 b/182268157
Change-Id: I174661f69dc90d57c0c966baa2360adb6a5ab8a4
Merged-In: I40a071399e3bc159a20ade917da4c94cace0524e