fix: update user media request permissions in useLive composable and ensure…

src/composables/useLive.ts

@@ -32,7 +32,7 @@ export function useLive({ enabledUserMedia = true, onStart, onRecord, onStop }:
   const currentTime = ref(0)
 
   // 获取设备列表并设置默认设备
-  const { videoInputs: cameras, audioInputs: microphones } = useDevicesList({ requestPermissions: true })
+  const { videoInputs: cameras, audioInputs: microphones } = useDevicesList({ requestPermissions: enabledUserMedia })
   const currentCamera = computed(() => cameras.value[0]?.deviceId)
   const currentMicrophone = computed(() => microphones.value[0]?.deviceId)
 

src/modules/student/lab/views/Index.vue

@@ -14,7 +14,7 @@ import { useAppConfig } from '@/composables/useAppConfig'
 import { useLiveMonitor } from '@/composables/useLiveMonitor'
 
 const appConfig = useAppConfig()
-useLiveMonitor({ autoStart: appConfig.liveMonitor })
+useLiveMonitor({ autoStart: !!appConfig.liveMonitor })
 
 const Question = defineAsyncComponent(() => import('../components/Question.vue'))
 const Info = defineAsyncComponent(() => import('../components/Info.vue'))