JSSpecCompiler: Parse properties list clause title

Author: https://github.com/DanShaders
Commit: 3077e516a2
Pull-request: https://github.com/SerenityOS/serenity/pull/23647
Reviewed-by: https://github.com/ADKaster ✅

Meta/Lagom/Tools/CodeGenerators/JSSpecCompiler/Parser/SpecificationClause.cpp

@@ -26,6 +26,9 @@ NonnullOwnPtr<SpecificationClause> SpecificationClause::create(SpecificationPars
             },
             [&](OneOf<AbstractOperationDeclaration, AccessorDeclaration, MethodDeclaration> auto const&) {
                 result = make<SpecificationFunction>(move(specification_clause));
+            },
+            [&](ClauseHeader::PropertiesList const&) {
+                result = make<ObjectProperties>(move(specification_clause));
             });
 
         if (!result->post_initialize(element))