SF: Present before signalling presentation done

In doing the refactor, I had effectively swapped the calls to
HWComposer::presentAndGetReleaseFences() and
DisplaySurface::onFrameCommitted() so that onFrameCommitted was being
called before the display was presented.

If client composition was used for those frames, the result was that the
GPU composed buffer on display could be written to (cleared) before it was
actually replaced by a new buffer.

Bug: 138914274
Test: Unable to reproduce black scanlines in Hangouts on Walleye
Change-Id: I13625f124130826a5f80337b74e937f1291220e1