AFAICT, there are FPs due to overridden methods that don't have an @Override annotation. We're anyway using ASTMethodDeclaration::isOverridden, which I'd like to improve to do the same thing as MissingOverride in a resolution pass after parsing. This will suppress FPs in more rules, and we don't need to fix it in this PR

Originally posted by @oowekyala in #3731 (review)