🎵 feat: Cumulative Transcription Support for External STT (#9318)

* 🔧 fix: TTS and STT Services to use AppConfig

- Updated `getProviderSchema` and `getProvider` methods to accept an optional `appConfig` parameter, allowing for more flexible configuration retrieval.
- Improved error handling by ensuring that the app configuration is checked before accessing TTS and STT schemas.
- Refactored `processTextToSpeech` and `streamAudio` methods to utilize the new `appConfig` parameter for better clarity and maintainability.

* feat: Cumulative Transcription Support for STT External

* style: fix medium-sized styling for admin settings dialogs

client/src/components/Sharing/PeoplePickerAdminSettings.tsx

@@ -163,7 +163,7 @@ const PeoplePickerAdminSettings = () => {
           {localize('com_ui_admin_settings')}
         </Button>
       </OGDialogTrigger>
-      <OGDialogContent className="w-full border-border-light bg-surface-primary text-text-primary md:w-1/4">
+      <OGDialogContent className="w-full border-border-light bg-surface-primary text-text-primary lg:w-1/4">
         <OGDialogTitle>{`${localize('com_ui_admin_settings')} - ${localize(
           'com_ui_people_picker',
         )}`}</OGDialogTitle>