LibWeb: Treat img width/height attributes as HTML dimension values

Userland/Libraries/LibWeb/HTML/HTMLImageElement.cpp

@@ -50,13 +50,11 @@ void HTMLImageElement::apply_presentational_hints(CSS::StyleProperties& style) c
 {
     for_each_attribute([&](auto& name, auto& value) {
         if (name == HTML::AttributeNames::width) {
-            if (auto parsed_value = parse_html_length(document(), value)) {
+            if (auto parsed_value = parse_dimension_value(value))
                 style.set_property(CSS::PropertyID::Width, parsed_value.release_nonnull());
-            }
         } else if (name == HTML::AttributeNames::height) {
-            if (auto parsed_value = parse_html_length(document(), value)) {
+            if (auto parsed_value = parse_dimension_value(value))
                 style.set_property(CSS::PropertyID::Height, parsed_value.release_nonnull());
-            }
         }
     });
 }