fix: conditional version for extension causes invalid json

Signed-off-by: Vincent Biret <[email protected]>

Author: baywet

src/Microsoft.OpenApi/MicrosoftExtensions/OpenApiEnumValuesDescriptionExtension.cs

@@ -41,10 +41,9 @@ public class OpenApiEnumValuesDescriptionExtension : IOpenApiExtension
     public void Write(IOpenApiWriter writer, OpenApiSpecVersion specVersion)
     {
         if (writer is null) throw new ArgumentNullException(nameof(writer));
-        if (specVersion is OpenApiSpecVersion.OpenApi2_0 or OpenApiSpecVersion.OpenApi3_0 &&
-            !string.IsNullOrEmpty(EnumName) &&
+        if (!string.IsNullOrEmpty(EnumName) &&
             ValuesDescriptions.Any())
-        { // when we upgrade to 3.1, we don't need to write this extension as JSON schema will support writing enum values
+        {
             writer.WriteStartObject();
             writer.WriteProperty(nameof(Name).ToFirstCharacterLowerCase(), EnumName);
             writer.WriteProperty("modelAsString", false);