LibJS: Convert Object::set() to ThrowCompletionOr

Author: https://github.com/linusg
Commit: 1d45541278
Pull-request: https://github.com/SerenityOS/serenity/pull/10327
Reviewed-by: https://github.com/IdanHo ✅

Userland/Libraries/LibJS/Runtime/Object.h

@@ -76,7 +76,7 @@ public:
     // 7.3 Operations on Objects, https://tc39.es/ecma262/#sec-operations-on-objects
 
     ThrowCompletionOr<Value> get(PropertyName const&) const;
-    bool set(PropertyName const&, Value, ShouldThrowExceptions);
+    ThrowCompletionOr<bool> set(PropertyName const&, Value, ShouldThrowExceptions);
     bool create_data_property(PropertyName const&, Value);
     bool create_method_property(PropertyName const&, Value);
     bool create_data_property_or_throw(PropertyName const&, Value);