fix: call aAuthorizeAndPlayURI on main thread which internally calls UIAppliation.openURL

Author: haashem

ios/Classes/SwiftSpotifySdkPlugin.swift

@@ -366,13 +366,13 @@ public class SwiftSpotifySdkPlugin: NSObject, FlutterPlugin {
         if accessToken != nil {
             appRemote?.connect()
         } else {
-          let appRemote = self.appRemote
-          Task {
+          Task { @MainActor in
             // Note: A blank string will play the user's last song or pick a random one.
-            if await appRemote?.authorizeAndPlayURI(spotifyUri, asRadio: asRadio ?? false, additionalScopes: scopes) == false {
+            if await self.appRemote?.authorizeAndPlayURI(spotifyUri, asRadio: asRadio ?? false, additionalScopes: scopes) == false {
               throw SpotifyError.spotifyNotInstalledError
             }
           }
+        }
     }
 }