Flexiglass: Move date and weather next to small clock if condition met

Date and weather should be either next to the small clock or below it if
the view model determine the condition met. This CL also consolate date
and weather logic into one place, removing date and weather from
smartspace since they are the same logic.

Bug: 402400952
Flag: com.android.systemui.scene_container
Test: LockscreenContentViewModelTest, manually on keyguard screen
Change-Id: I422cc3a3d183444c1c92dd965b33fe580898114b