[Floaty] Use same squeeze thickness on all screen edges

Bug: 413627757
Flag: com.android.systemui.shared.enable_lpp_assist_invocation_effect
Test: SqueezeEffectMotionTest (next CL)
Test: Manual, i.e. verified the animation on phone and tablet
Change-Id: Ifafa1eb8fec12a8d5a7ffb52bd62b11468ffd889