fix: avoid ScreenCaptureKit launch crash on macOS 11 (#424)

Co-authored-by: txhno <[email protected]>

tauri/src/platform/audio.ts

@@ -2,9 +2,8 @@ import { invoke } from '@tauri-apps/api/core';
 import type { PlatformAudio, AudioDevice } from '@/platform/types';
 
 export const tauriAudio: PlatformAudio = {
-  isSystemAudioSupported(): boolean {
-    // This will be checked dynamically via invoke
-    return true; // Tauri supports it, but actual support depends on platform
+  async isSystemAudioSupported(): Promise<boolean> {
+    return await invoke<boolean>('is_system_audio_supported');
   },
 
   async startSystemAudioCapture(maxDurationSecs: number): Promise<void> {