Update data-type-property-collection.class.ts

Ensure map et al works - missing override

src/Umbraco.Web.UI.Client/libs/data-type/data-type-property-collection.class.ts

@@ -9,6 +9,10 @@ export class UmbDataTypePropertyCollection extends Array<DataTypePropertyPresent
 		super(...args);
 	}
 
+	static get [Symbol.species](): ArrayConstructor {
+		return Array;
+	}
+	
 	getValueByAlias<T>(alias: string): T | undefined {
 		const property = this.getByAlias(alias);