Add test model to baseline OpenAPI specs

Author: github-abcde

end_to_end_tests/baseline_openapi_3.0.json

@@ -2549,6 +2549,15 @@
           }
         }
       },
+      "AModelWithOptionalPropertyRefAndDefaultValue": {
+        "type": "object",
+        "properties": {
+          "enum_property_ref": {
+            "$ref": "#/components/schemas/AnEnum",
+            "default": "FIRST_VALUE"
+          }
+        }
+      },
       "ModelWithDateTimeProperty": {
         "type": "object",
         "properties": {

end_to_end_tests/baseline_openapi_3.1.yaml

@@ -2541,6 +2541,15 @@ info:
         }
       }
     },
+    "AModelWithOptionalPropertyRefAndDefaultValue": {
+      "type": "object",
+      "properties": {
+        "enum_property_ref": {
+          "$ref": "#/components/schemas/AnEnum",
+          "default": "FIRST_VALUE"
+        }
+      }
+    },
     "ModelWithDateTimeProperty": {
       "type": "object",
       "properties": {