Close guts when disabling a bundle

Otherwise, when the bundle is re-enabled, it comes back in guts-open state with the switch in the wrong place (off).

Fixes: 423677831
Test: manual + BundleHeaderViewModelTest
Flag: com.android.systemui.notification_bundle_ui
Change-Id: Id16c1d43210299635496dc3c9c813bcb74f0794a