Remove SurfaceControl#getHandle from JAVA apis 1/2

Holding on to a reference of the handle in Java will keep the server-side surface alive until
the reference is removed by GC. This may cause surfaces to be kept alive longer than necessary.
Instead hold on the surface control and call SurfaceControl#release which will release the local
reference to the server-side surface.

Bug: 136004147
Test: go/wm-smoke
Test: gesture nav sanity tests
Test: atest CompositionSamplingListenerTest

Change-Id: Iab33680746c8f48c28783e6a2a13c9ac7ae04980