feat: disable edit button when the comment is blank or unchanged
feat: disable edit button when the comment is blank or unchanged

Co-Authored-By: Cameron Bothner <c3a56022170968d7890d9bc2fe5a0747168dc01b@gmail.com>

galahq/gala,michigan-sustainability-cases/gala,michigan-sustainability-cases/gala,galahq/gala,galahq/gala,michigan-sustainability-cases/gala