BufferQueue: Add bufferReplaced flag in QueueBufferOutput

For async buffer queue, when queueBuffer overwrites a previously queued
buffer, because consumer won't be able to acquire the overwritten
buffer, onBufferReleased isn't triggered either.

This makes it difficult to track which buffer in the buffer queue
becomes free other than calling dequeueBuffer(). Adding a flag in
QueueBufferOutput addresses this issue.

Test: TestBufferReplacedInQueueBuffer in BufferQueue_tests
Bug: 34481539
Change-Id: Ic7f4be2d3f9691dd6b007a450240614c0c420f0d