Do not report error for playback rate/pitch of 1.0

The operation is not mandatory to implement in HAL.
Silently swallow the error from the HAL. For other values
of speed and pitch it should fail as it isn't supported by
the HAL.
If called from NuPlayer with other values for speed and pitch,
the track will recreated as non offloaded.

Bug: 232426500
Test: Use test application in buganizer
Change-Id: Ifc377148f4594e730f9c37426e00c033026c068d