Add field_redirect_page to site_sections terms and fix root page hierarchy

- Add field_redirect_page to site_sections taxonomy terms, with a custom
  EntityReferenceSelection plugin that filters content_page nodes by section
- Redirect taxonomy term canonical URLs to the configured node (301)
- Fix root page detection in MenuBlock and views to also match nodes whose
  field_parent_page points to a taxonomy_term (not only empty parent)
- Move root taxonomy-term option to the top of the parent-page dropdown
- Add breadcrumb workaround for Gavias notech theme separator rendering
- Add imecc_menu_helper submodule
- Translate config labels and default terms from English to Portuguese

Co-Authored-By: Henrique Bauer <henrique@webcontent.com.br>
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

config/install/pathauto.pattern.site_sections_term.yml

@@ -5,7 +5,7 @@ dependencies:
     - structural_pages
     - taxonomy
 id: site_sections_term
-label: 'Site Sections Term'
+label: 'Termo de Seções do Site'
 type: 'canonical_entities:taxonomy_term'
 pattern: '[term:hierarchy-path]'
 selection_logic: and