The modal title has the following default styling:

The keyboard shortcut modal wraps the title in a <span> element, which is then styled with a bigger font size and bold font weight:

If the styling with the bigger font size and bold font weight is preferred, I'd suggest to make it the default in the Modal component instead of overriding it on a case by case basis. This way, all the modals (even the ones added by plugins) will have the same styling.