fix(lints): await asynchronous work in guarded blocks

lib/utils/extension_auth_launcher.dart

@@ -100,7 +100,7 @@ Future<bool> openPendingExtensionVerification(
       _log.w(
         'Could not open verification challenge for $normalizedExtensionId',
       );
-      return showExtensionVerificationHelpDialog(
+      return await showExtensionVerificationHelpDialog(
         normalizedExtensionId,
         uri,
         browserMode: browserMode,

lib/utils/saf_display_path.dart

@@ -49,8 +49,8 @@ String buildSafFileDisplayPath({
   if (displayRoot != null) {
     return [
       displayRoot.replaceAll(RegExp(r'/+$'), ''),
-      if (cleanRelativeDir != null) cleanRelativeDir,
-      if (cleanFileName != null) cleanFileName,
+      ?cleanRelativeDir,
+      ?cleanFileName,
     ].join('/');
   }