Update statusbar insets when switching displays

Caches statusbar insets for each display and notifies
about changes if the insets has changed

Fixes: 195087279
Test: checked statusbar size on foldable devices in different rotations on both screens
atest: com.android.systemui.statusbar.phone.StatusBarContentInsetsProviderTest
Change-Id: I6c3ee7eeafd1940902d9b17cbb749ba525ebf97f
Merged-In: I6c3ee7eeafd1940902d9b17cbb749ba525ebf97f