Fix lost shader input capacity after end-of-stream

When exporting compositions with multiple images in a row, transformation could
get stuck if a shader was ready to accept input when end-of-stream was already
signaled and queued from upstream. Fix accounting for the downstream capacity.

Manually tested on concatenations with several images and several videos in a
row, by adding logging and verifying the capacity updates as expected across
edited media item transitions.

PiperOrigin-RevId: 532088793

libraries/effect/src/main/java/androidx/media3/effect/FrameConsumptionManager.java

@@ -65,6 +65,7 @@ public synchronized void onReadyToAcceptInputFrame() {
 
     long presentationTimeUs = pendingFrame.second;
     if (presentationTimeUs == C.TIME_END_OF_SOURCE) {
+      consumingGlShaderProgramInputCapacity++;
       videoFrameProcessingTaskExecutor.submit(
           consumingGlShaderProgram::signalEndOfCurrentInputStream);
     } else {