Fix NPE in RotationLockTileDataInteractor.hasSufficientPermission

PackageManager.getRotationResolverPackageName() can return null.
Receiving the return value of it by non-null type, String, causes the
NPE.

Flag: EXEMPT bug fix
Bug: 378736819
Test: manual - SystemUI boots
Change-Id: I8c14fda3f4da82fbefb14914c71f156363624e12
1 file changed