Fix smartspace disappearing when changing from small to large weather clock...

Fix smartspace disappearing when changing from small to large weather clock and the switching to other clock

The reason is that we changed alpha in ClockSizeTransition but not
change it back in SmartspaceVisibilityTransition

Bug: 327461585
Test: manual
Flag: ACONFIG com.android.systemui.migrate_clocks_to_blueprint STAGING

Change-Id: I53230827f108e420b32de357b35bdb4de73e4a7c