Style: fix a misplaced guard comment and two quoting nits

The provider-id comment block sat above requireValidRecordType; move it
back over requireValidProviderId. Also drop needless quote escapes in
the resolver-check script and match the ui/ double-quote style in
ButtonGroupSeparator.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

scripts/check-dns-resolvers.js

@@ -25,7 +25,7 @@ export const ensureDigAvailable = async (exec = execFileAsync) => {
         if (error?.code === 'ENOENT') {
             throw new Error('The `dig` executable is required for DNS resolver checks; install dnsutils (Debian/Ubuntu) or bind (macOS).');
         }
-        throw new Error(`Unable to run \'dig\': ${error instanceof Error ? error.message : String(error)}`);
+        throw new Error(`Unable to run 'dig': ${error instanceof Error ? error.message : String(error)}`);
     }
 };