fix(AudioSwitcher): Switching audio for Windows 10 < 1803

Fixes SOUNDSWITCH-EJ
Fixes SOUNDSWITCH-EH

Author: Belphemur

SoundSwitch.Audio.Manager/Interop/Client/Extended/Factory/AudioPolicyConfigFactory.cs

@@ -7,6 +7,7 @@ namespace SoundSwitch.Audio.Manager.Interop.Client.Extended.Factory
     internal static class AudioPolicyConfigFactory
     {
         private const int OS_21H2_VERSION = 21390;
+        private const int OS_1709_VERSION = 16299;
 
         public static IAudioPolicyConfig Create()
         {
@@ -17,12 +18,12 @@ public static IAudioPolicyConfig Create()
                     return new UnsupportedAudioPolicyConfig();
                 }
 
-                if (Environment.OSVersion.Version.Build >= OS_21H2_VERSION)
+                return Environment.OSVersion.Version.Build switch
                 {
-                    return new Post21H2AudioPolicyConfig();
-                }
-
-                return new Pre21H2AudioPolicyConfig();
+                    <= OS_1709_VERSION => new UnsupportedAudioPolicyConfig(),
+                    >= OS_21H2_VERSION => new Post21H2AudioPolicyConfig(),
+                    _                  => new Pre21H2AudioPolicyConfig()
+                };
             });
         }
     }