[Catalyst] Notify entry point when screen state is updated

Most screens have entry point from another screen. When the screen
is updated, its entry point will get notified if dependencies are
managed well with observer/listener. However, observer/listener
mechanism may not be available across screens. This change provides an
enhancement to always notify entry point when screen state is updated.

Bug: 332201912
Flag: EXEMPT library
Test: manual
Change-Id: Ib714420b2498593ca52ac8b387cd2d3dac679d87