Enhance GainMeter component with GrooveControls integration and volume management

Commit notes

This commit updates the GainMeter component to include a GrooveControls popover for managing groove settings directly within the volume control interface. The volume control button is now wrapped in a Group alongside the GrooveControls, improving user interaction. Additionally, the SequencerTrack component is modified to pass a disabled prop to GainMeter, ensuring better state management during track loading. These changes aim to streamline the user experience when adjusting audio settings in the sequencer.