Reparent PiP menu under the PiP task

This makes the surface control follow the properties of the parent,
which in turn ensures the position and placement is in sync.

Test: before http://recall/-/ekEuGtt9d9HWqkUtAzpHx8/hNq8jcHcDZCjLNhQ9pZ8RH
Test: after http://recall/-/ekEuGtt9d9HWqkUtAzpHx8/dchDs9D4pTac80eX6LrhWf
Test: before winscope http://screen/7doHKmUKagwHnkA
Test: after winscope http://screen/7dXz32t3FEtd6dB

Bug: 285935265
Bug: 268051585
Bug: 285934999

Change-Id: I1b6ec634d9cf97b878beb331748f6a14363af2a9