Handle rapid media button presses for previous track

[synman]

Context

TODO comment at RemoteControlReceiver.java:51 indicates that rapid succession media button presses should trigger a "previous track" action.

Expected Behavior

When the media button is pressed rapidly in quick succession, it should be interpreted as a "previous track" command (similar to how Bluetooth headsets and car stereos handle double-press).

References

• RemoteControlReceiver.java:51

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Created from workspace-wide TODO audit.