[SysUI][Floaty] Adjust squeeze effect animation when config duation less

than 500ms

* If config duration for "Press & hold power button" is less than 500ms,
  deduct the delta (500ms - new duration) from the INWARD_EFFECT_DURATION (800ms)

Bug: 408363187
Test: Manual, the effect adjusts now with config duration <= 500ms
Flag: com.android.systemui.shared.enable_lpp_assist_invocation_effect
Change-Id: Ie2734f398bbef8b4d39e59762ed85dd47cfa6919