SF: Rename postComposition and related for clarity

The "post" in "postComposition" (and related "onPostComposition") can be
read as a preposition or a verb, making the name less easy to understand.

We believe "postComposition" is intended to mean "after composition".
More precisely, it is called after calling `present`, so rename to
"onCompositionPresented". Rename the related "postComposition" on other
classes (Layer, Scheduler) to match.

Splitting out from original motivating discussion in
Ib9d074671e32c95875ef7e0791dd95d6e595e47a.

Bug: 241285491
Bug: 259132483
Test: No new behavior; no new tests

Change-Id: I7f62728ea35aee47ebeac10dc7de82258080690e
diff --git a/services/surfaceflinger/Layer.h b/services/surfaceflinger/Layer.h
index dd91adc..91cd783 100644
--- a/services/surfaceflinger/Layer.h
+++ b/services/surfaceflinger/Layer.h
@@ -433,13 +433,10 @@
     void updateCloneBufferInfo();
     uint64_t mPreviousFrameNumber = 0;
 
-    /*
-     * called after composition.
-     * returns true if the layer latched a new buffer this frame.
-     */
-    void onPostComposition(const DisplayDevice*, const std::shared_ptr<FenceTime>& /*glDoneFence*/,
-                           const std::shared_ptr<FenceTime>& /*presentFence*/,
-                           const CompositorTiming&);
+    void onCompositionPresented(const DisplayDevice*,
+                                const std::shared_ptr<FenceTime>& /*glDoneFence*/,
+                                const std::shared_ptr<FenceTime>& /*presentFence*/,
+                                const CompositorTiming&);
 
     // If a buffer was replaced this frame, release the former buffer
     void releasePendingBuffer(nsecs_t /*dequeueReadyTime*/);