Improve setting audio session

Model/Player/Backends/AVPlayerBackend.swift

@@ -285,10 +285,6 @@ final class AVPlayerBackend: PlayerBackend {
         }
 
         let startPlaying = {
-            #if !os(macOS)
-                try? AVAudioSession.sharedInstance().setActive(true)
-            #endif
-
             self.setRate(self.model.currentRate)
 
             guard let item = self.model.playerItem, self.isAutoplaying(item) else { return }

Model/Player/Backends/MPVBackend.swift

@@ -192,10 +192,6 @@ final class MPVBackend: PlayerBackend {
         }
 
         let startPlaying = {
-            #if !os(macOS)
-                try? AVAudioSession.sharedInstance().setActive(true)
-            #endif
-
             DispatchQueue.main.async { [weak self] in
                 guard let self = self else {
                     return

Model/Player/PlayerModel.swift

@@ -755,11 +755,6 @@ final class PlayerModel: ObservableObject {
             remoteCommandCenterConfigured = true
 
             #if !os(macOS)
-                try? AVAudioSession.sharedInstance().setCategory(
-                    .playback,
-                    mode: .moviePlayback
-                )
-
                 UIApplication.shared.beginReceivingRemoteControlEvents()
             #endif
 

Shared/YatteeApp.swift

@@ -247,6 +247,11 @@ struct YatteeApp: App {
                 }
             }
         #endif
+
+        #if !os(macOS)
+            try? AVAudioSession.sharedInstance().setCategory(.playback)
+            try? AVAudioSession.sharedInstance().setActive(true)
+        #endif
     }
 
     func migrateAccounts() {