[Backport release/v0.24] Fix a hang in MapboxSpeechSynthesizer (#13482)

Backport of #13435 to `release/v0.24`.

Cherry-picked commits: 6f983161b3c456ccfcd22c41e815b845e0205c25

Co-authored-by: Nastassia Makaranka <nastassia.makaranka@mapbox.com>
GitOrigin-RevId: 19dc88628acfb812a79eaf9a6e244a9dee26375a

Author: 2 people

CHANGELOG.md

@@ -1,12 +1,22 @@
 # Changes to the Mapbox Navigation SDK for iOS
 
+## 3.24.0
+
+### Audio
+
+* Fixed a possible hang during `MapboxSpeechSynthesizer` initialization.
+
 ## 3.24.0-rc.1
 
 ### Packaging
 
 * MapboxNavigationCore now requires [MapboxMaps v11.24.0-rc.1](https://github.com/mapbox/mapbox-maps-ios/releases/tag/v11.24.0-rc.1)
 * MapboxNavigationCore now requires [MapboxNavigationNative v324.24.0-rc.1](https://github.com/mapbox/mapbox-navigation-native-ios/releases/tag/v324.24.0-rc.1)
 
+### Map
+
+* Fixed an issue where panning on the Mapbox map logo or info button could set the navigation camera to the idle state.
+
 ### Routing
 
 * Fixed a race condition that could lead to a crash in `FasterRouteController`.

Sources/MapboxNavigationCore/VoiceGuidance/RemoteSpeechSynthesizer/MapboxSpeechSynthesizer.swift

@@ -49,12 +49,17 @@ public final class MapboxSpeechSynthesizer: SpeechSynthesizing {
     private func subscribeToSystemVolume() {
         audioPlayerQueue.async { [weak audioPlayer] in
             guard let audioPlayer else { return }
-            let systemVolume = AVAudioSession.sharedInstance().outputVolume
+            let session = AVAudioSession.sharedInstance()
+            let systemVolume = session.outputVolume
             audioPlayer.volume = systemVolume
-        }
-        volumeSubscribtion = AVAudioSession.sharedInstance().publisher(for: \.outputVolume).sink { [weak self] volume in
-            self?.audioPlayerQueue.async { [weak audioPlayer = self?.audioPlayer] in
-                audioPlayer?.volume = volume
+
+            let subscription = session.publisher(for: \.outputVolume)
+                .receive(on: self.audioPlayerQueue)
+                .sink { [weak audioPlayer] volume in
+                    audioPlayer?.volume = volume
+                }
+            onMainAsync { [weak self] in
+                self?.volumeSubscribtion = subscription
             }
         }
     }