LibWeb/IDB: Resolve FIXME regarding removing from indecies

Author: https://github.com/stelar7
Commit: 13674c1b32
Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/4727
Reviewed-by: https://github.com/gmta ✅
Reviewed-by: https://github.com/shannonbooth

Libraries/LibWeb/IndexedDB/Internal/Index.cpp

@@ -122,4 +122,11 @@ void Index::store_a_record(IndexRecord const& record)
     });
 }
 
+void Index::remove_records_with_value_in_range(GC::Ref<IDBKeyRange> range)
+{
+    m_records.remove_all_matching([&](auto const& record) {
+        return range->is_in_range(record.value);
+    });
+}
+
 }