feat(ios audio): report real output route so the toggle icon is correct

BT audio already routes on iOS, but the web UI can't see it (iOS hides audio outputs
from enumerateDevices), so the icon was stuck on speaker. Plugin v1.1.0 now exposes the
active output: getRoute() + a 'routeChange' event ('speaker'|'bluetooth'|'wired'|
'receiver'|'airplay'). Web subscribes and drives the icon/label from the real route
(bluetooth/headphones/speaker), and the iOS toggle becomes a 2-state Speaker <-> Device
cycle (JS can't enumerate outputs there). Also strips the earpiece-investigation debug
logging from the plugin. Native needs one Codemagic build; web is live (batch148).

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

mobile/plugins/audio-route/package.json

@@ -1,6 +1,6 @@
 {
   "name": "audio-route",
-  "version": "1.0.5",
+  "version": "1.1.0",
   "description": "iOS earpiece/speaker audio route toggle for Biz Connect",
   "main": "dist/plugin.cjs.js",
   "module": "dist/esm/index.js",