Fix peripheral volume_muted state (#403)

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

examples/ReSpeaker 4mic HAT/DOCS.md

@@ -55,6 +55,7 @@ All animations mirror the Home Assistant Voice PE ESPHome firmware exactly.
 | Error | Red pulse | All LEDs red, pulsing |
 | Timer ticking | Countdown arc | Arc proportional to `seconds_left / total_seconds` |
 | Timer ringing | Pulse + optional red | Full ring pulsing; red at corners if muted |
+| Volume muted | Solid ring + red indicator | Red at the bottom-mid LED | 
 
 "User color" comes from the Home Assistant Light entity described below (default: HAVPE-style blue). HA brightness scales every animation in this table. Semantic colors (Waiting/Listening cyan spin, Thinking pulse, Replying anticlockwise, Muted solid + red, Timer pulse/arc, Error red pulse) are hardcoded so they remain recognisable across user customisation.
 
@@ -235,4 +236,4 @@ The seeed-voicecard driver uses I2S — it does **not** use SPI — so there is
 
 1. Confirm LVA is running and port 6055 is open: `nc -zv localhost 6055`.
 2. With `network_mode: host`, `localhost` resolves to the Pi itself.
-3. If LVA runs in a separate Docker network, use its container IP or service name as `--host`.
+3. If LVA runs in a separate Docker network, use its container IP or service name as `--host`.