Set Activity tags in addition to calling the new API.

We need to retain the tags for backwards compatibility with older consumers that haven't been updated to read the Status and StatusDescription properties.

Author: bgrainger

src/MySqlConnector/Utilities/ActivitySourceHelper.cs

@@ -17,9 +17,7 @@ internal static class ActivitySourceHelper
 	public const string NetPeerNameTagName = "net.peer.name";
 	public const string NetPeerPortTagName = "net.peer.port";
 	public const string NetTransportTagName = "net.transport";
-#if !NET6_0_OR_GREATER
 	public const string StatusCodeTagName = "otel.status_code";
-#endif
 	public const string ThreadIdTagName = "thread.id";
 
 	public const string DatabaseSystemValue = "mysql";
@@ -42,20 +40,18 @@ public static void SetSuccess(this Activity activity)
 	{
 #if NET6_0_OR_GREATER
 		activity.SetStatus(ActivityStatusCode.Ok);
-#else
-		activity.SetTag(StatusCodeTagName, "OK");
 #endif
+		activity.SetTag(StatusCodeTagName, "OK");
 	}
 
 	public static void SetException(this Activity activity, Exception exception)
 	{
 		var description = exception is MySqlException mySqlException ? mySqlException.ErrorCode.ToString() : exception.Message;
 #if NET6_0_OR_GREATER
 		activity.SetStatus(ActivityStatusCode.Error, description);
-#else
+#endif
 		activity.SetTag(StatusCodeTagName, "ERROR");
 		activity.SetTag("otel.status_description", description);
-#endif
 		activity.AddEvent(new ActivityEvent("exception", tags: new ActivityTagsCollection
 		{
 			{ "exception.type", exception.GetType().FullName },