Fix unit tests if universal_resizable_by_default is enabled

Currently WmTests declares target sdk 28. So if the test ActivityRecord
is assigned with the real WmTests package name, it can adopt the legacy
behavior by default.

For the tests that need to use mocked package names, mock its
application info directly.

Bug: 357141415
Flag: com.android.window.flags.universal_resizable_by_default
Test: DisplayRotationCompatPolicyTests
      ActivityRecordTests#testSetOrientation_restrictedByTargetSdk
      TransparentPolicyTest# \
          testTranslucentActivitiesDontGoInSizeCompatMode

Change-Id: Ic7a644f8739899f8a0578fca9878bf40940438ec