AttachedSurfaceControl: Expose "setChildBoundingInsets"

This method can be used to confine all children of a given ViewRootImpl
(e.g. SurfaceView). It provides a pragmatic method to clip SurfaceView
to scrolling containers.

Bug: 263057433
Change-Id: I6d288f04185f2f858b3c8c1cbe5f34e7e63b1316