feat: change default title for text xblock

cms/djangoapps/contentstore/views/item.py

@@ -427,13 +427,16 @@ def xblock_view_handler(request, usage_key_string, view_name):
 
             # Note that the container view recursively adds headers into the preview fragment,
             # so only the "Pages" view requires that this extra wrapper be included.
+            display_label = xblock.display_name or xblock.scope_ids.block_type
+            if not xblock.display_name and xblock.scope_ids.block_type == 'html':
+                display_label = 'Text'
             if is_pages_view:
                 fragment.content = render_to_string('component.html', {
                     'xblock_context': context,
                     'xblock': xblock,
                     'locator': usage_key,
                     'preview': fragment.content,
-                    'label': xblock.display_name or xblock.scope_ids.block_type,
+                    'label': display_label,
                 })
         else:
             raise Http404