[NET 6 Attribute Conversion] VideoSubscriberAccount (#14055)

* Remove existing attributes

* Attribute Conversion

Co-authored-by: tj_devel709 <antlambe@microsoft.com>

src/VideoSubscriberAccount/VSAccountMetadataRequest.cs

@@ -9,10 +9,13 @@ namespace VideoSubscriberAccount {
 	public partial class VSAccountMetadataRequest {
 
 #if NET
-		[SupportedOSPlatform ("ios10.2")]
 		[SupportedOSPlatform ("tvos10.1")]
+		[SupportedOSPlatform ("ios10.2")]
+		[SupportedOSPlatform ("macos10.14")]
+		[UnsupportedOSPlatform ("maccatalyst")]
 #else
-		[TV (10,1)][iOS (10,2)]
+		[TV (10,1)]
+		[iOS (10,2)]
 #endif
 		public VSAccountProviderAuthenticationScheme[] SupportedAuthenticationSchemes {
 			get {