🎨 Palette: Enhance Master Screen controls with accessibility and haptics

[Pitrat-wav]

• Added aria-label and aria-pressed to mixer mute buttons for better screen reader support.
• Integrated Telegram WebApp haptic feedback (impactOccurred('light')) for mute buttons and BPM preset clicks.
• Added selectionChanged haptic feedback and aria-label to the BPM slider for a more tactile feel on mobile.
• Refactored BPM preset buttons to use a map, ensuring consistent 'Set BPM to [value]' labeling and haptic triggers across all presets.

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PR created automatically by Jules for task 7914983649984832486 started by @Pitrat-wav

[google-labs-jules]

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