feat: Content Search Modal: Filters [FC-0040] (#918)

Implementation of openedx/modular-learning#201

Implements a modal for searching course content with filters for searching in current or all courses, filtering by content type, content tags and text.

src/header/Header.jsx

@@ -22,7 +22,7 @@ const Header = ({
   const [isShowSearchModalOpen, openSearchModal, closeSearchModal] = useToggle(false);
 
   const studioBaseUrl = getConfig().STUDIO_BASE_URL;
-  const meiliSearchEnabled = getConfig().MEILISEARCH_ENABLED || null;
+  const meiliSearchEnabled = [true, 'true'].includes(getConfig().MEILISEARCH_ENABLED);
   const mainMenuDropdowns = [
     {
       id: `${intl.formatMessage(messages['header.links.content'])}-dropdown-menu`,