[Dual Shade] Fix SystemIconChip hover behavior

Uses default hover and ripple indication to match
UX specs.
The chip shape is now applied via a Clip modifier
so both the ripple and background share it.

Bug: 408486251
Test: manual, video in bug
Flag: com.android.systemui.scene_container

Change-Id: Iede60e03cdbbe5f51575bf792191dd86a78214d7