PHPStan fixes.

Author: alan-cole

web/themes/contrib/civictheme/civictheme.theme

@@ -277,5 +277,5 @@ function civictheme_page_attachments_alter(array &$attachments) {
   catch (ComponentNotFoundException $exception) {
     \Drupal::logger('civictheme')->error('Unable to find alert component: %message', ['%message' => $exception->getMessage()]);
   }
-  $attachments['#cache']['contexts'] = Cache::mergeContexts($variables['#cache']['contexts'] ?? [], ['url.query_args']);
+  $attachments['#cache']['contexts'] = Cache::mergeContexts($attachments['#cache']['contexts'] ?? [], ['url.query_args']);
 }

web/themes/contrib/civictheme/includes/search.inc

@@ -61,11 +61,11 @@ function _civictheme_preprocess_html__search_head_title(array &$variables): void
   if (empty($keywords)) {
     return;
   }
-  $head_title = (string) $variables['head_title']['title'] ?? '';
+  $head_title = (string) ($variables['head_title']['title'] ?? '');
   if (empty($head_title)) {
     return;
   }
-  $sanitized_keywords = htmlspecialchars($keywords, ENT_QUOTES, 'UTF-8');
+  $sanitized_keywords = htmlspecialchars((string) $keywords, ENT_QUOTES, 'UTF-8');
   $variables['head_title']['title'] = t("@title - Searching for '@keywords'", [
     '@title' => $head_title,
     '@keywords' => $sanitized_keywords,