Fix peripheral volume_muted state (#403)

Enable updating the `volume_muted` status when muting/unmuting the media player volume, and improve its tracking.

examples/Satellite1 HAT Board/DOCS.md

@@ -68,6 +68,7 @@ In Home Assistant, you can:
    - Thinking → Pulse in your color
    - Speaking → Reverse spin in your color
    - Muted → Solid ring in your color + red at mic positions
+   - Volume muted → Solid ring in your color + red at AUX jack corner LEDs
    - Timer → Countdown arc in your color
 
 3. **Set brightness** — scales all animations by the chosen brightness (0–100%). Useful for adapting to ambient lighting.
@@ -188,6 +189,7 @@ All animations mirror the Home Assistant Voice PE ESPHome firmware exactly. The
 | Error | Red pulse | All LEDs red, pulsing |
 | Timer ticking | Countdown arc | Arc length proportional to `seconds_left / total_seconds`, tinted by your color |
 | Timer ringing | Pulse + optional red | Full ring pulsing in your color; red at 3 & 9 if muted |
+| Volume muted | Solid ring + red indicator | red at the AUX jack corner LEDs positions 11, 0, 1 to indicate the media player volume is zero |
 
 **Note:** All animations except twinkle, off, and error animations use the color from the HA Light entity. This means you can customize the entire LED experience from Home Assistant by adjusting the light's RGB color and brightness.