BlastBufferQueue: Handle onFrameReplaced

If a buffer is replaced, we should not call onFrameAvailable
which will incorrectly increase the number of buffers BBQ
expects to acquire.

Test: manual tests, atest CtsWindowManagerDeviceTestCases, check that we are not stuck in onFrameAvailable
Change-Id: Ib6fc3b11905fbf24c2528e14b1fb2409d1f43ff6