“We conclude that this ruling requires we now hold Maryland’s ‘good and substantial reason’ requirement unconstitutional. And were the similarities between this requirement and New York’s now stricken proper cause requirement not self-evident enough, the Bruen Court expressly noted that Maryland was one of six states to ‘have analogues to the ‘proper cause’ standards,’ citing Md. Pub. Safety § 5-306(a)(6)(ii) and quoting its ‘good and substantial reason’ language,” Chief Justice Gregory Wells wrote on behalf of the appellate panel.