Handle a connection issue when we try to start a new voice broadcast (#7276)

Riot/Modules/VoiceBroadcast/VoiceBroadcastSDK/VoiceBroadcastService.swift

@@ -186,7 +186,7 @@ public class VoiceBroadcastService: NSObject {
                 return
             }
             
-            self.room.sendStateEvent(.custom(VoiceBroadcastSettings.voiceBroadcastInfoContentKeyType),
+            let httpOperation = self.room.sendStateEvent(.custom(VoiceBroadcastSettings.voiceBroadcastInfoContentKeyType),
                                      content: stateEventContent, stateKey: stateKey) { [weak self] response in
                 guard let self = self else { return }
                 
@@ -199,6 +199,9 @@ public class VoiceBroadcastService: NSObject {
                 }
                 taskCompleted()
             }
+            
+            // No retry to send the request
+            httpOperation.maxNumberOfTries = 0
         }
     }
 }