fix: align OpenAPI 3.x.y file uploads with specification (#10409)

Refs #9278

src/core/plugins/json-schema-5/index.js

@@ -14,6 +14,7 @@ import Schemes from "./components/schemes"
 import SchemesContainer from "./containers/schemes"
 import * as JSONSchemaComponents from "./components/json-schema-components"
 import { ModelExtensions } from "./components/model-extensions"
+import { hasSchemaType } from "./fn"
 
 const JSONSchema5Plugin = () => ({
   components: {
@@ -31,6 +32,9 @@ const JSONSchema5Plugin = () => ({
     SchemesContainer,
     ...JSONSchemaComponents,
   },
+  fn: {
+    hasSchemaType,
+  },
 })
 
 export default JSONSchema5Plugin