Don't re-inflate bouncer

Re-inflating the bouncer shouldn't be necessary every
time it get hidden, it causes lots of jank.

Bug: 74602128
Test: external/chromium-trace/systrace.py gfx freq am wm sched binder_driver view -a com.android.systemui -o sysui.html
Change-Id: Ie853874c1be3f621b7fa9f010a06ea0fa6253d1b