Splitting isEffectEnabledAndPowerButtonPressedAsSingleGesture

With two flows, the proposal is for the interactor to identify semantics
for what should occur with haptics and the squeeze effect.

Test: added unit tests to SqueezeEffectInteractorTest. Modified other
  unit tests accordingly.
Flag: com.android.systemui.shared.enable_lpp_assist_invocation_haptic_effect
Bug: 425725294

Change-Id: Id5c036e0ef1aeba8dc397c420d4357b5e1691273