[fix](trx-frontend-http): propagate color/outline in TrackSymbol setAisState

setAisState only updated heading/course/speed, silently dropping color and
outline fields. Extend it to also accept and apply those fields so theme
color refreshes take effect without recreating the marker.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Signed-off-by: Stan Grams <sjg@haxx.space>

src/trx-client/trx-frontend/trx-frontend-http/assets/web/leaflet-ais-tracksymbol.js

@@ -92,6 +92,8 @@
         if ("heading" in next) this.options.heading = next.heading;
         if ("course" in next) this.options.course = next.course;
         if ("speed" in next) this.options.speed = next.speed;
+        if ("color" in next) this.options.color = next.color;
+        if ("outline" in next) this.options.outline = next.outline;
       }
       this._refreshIcon();
       return this;