Improve LogLevel checking

Author: DustinCampbell

src/Razor/src/Microsoft.CodeAnalysis.Razor.Workspaces/Logging/LogLevelExtensions.cs

@@ -0,0 +1,17 @@
+// Copyright (c) .NET Foundation. All rights reserved.
+// Licensed under the MIT license. See License.txt in the project root for license information.
+
+namespace Microsoft.CodeAnalysis.Razor.Logging;
+
+internal static class LogLevelExtensions
+{
+    public static bool IsAtLeast(this LogLevel target, LogLevel logLevel)
+    {
+        return target >= logLevel && target != LogLevel.None;
+    }
+
+    public static bool IsAtMost(this LogLevel target, LogLevel logLevel)
+    {
+        return target <= logLevel || target == LogLevel.None;
+    }
+}

src/Razor/src/Microsoft.VisualStudio.LanguageServices.Razor/Logging/ActivityLogLoggerProvider.Logger.cs

@@ -16,7 +16,7 @@ private sealed class Logger(RazorActivityLog activityLog, string categoryName) :
         private readonly string _categoryName = categoryName;
 
         public bool IsEnabled(LogLevel logLevel)
-            => logLevel is LogLevel.Warning or LogLevel.Error or LogLevel.Critical;
+            => logLevel.IsAtLeast(LogLevel.Warning);
 
         public void Log(LogLevel logLevel, string message, Exception? exception)
         {