chore: drop xmodule mixin support from the xblocks-contrib blocks

Author: farhan

openedx/core/lib/xblock_utils/__init__.py

@@ -144,7 +144,7 @@ def wrap_xblock(
     template_context = {
         'content': block.display_name if display_name_only else frag.content,
         'classes': css_classes,
-        'display_name': block.display_name_with_default_escaped,  # xss-lint: disable=python-deprecated-display-name
+        'display_name': block.display_name_with_default,  # xss-lint: disable=python-deprecated-display-name
         'data_attributes': ' '.join(f'data-{markupsafe.escape(key)}="{markupsafe.escape(value)}"'
                                     for key, value in data.items()),
     }

openedx/envs/common.py

@@ -2988,3 +2988,7 @@ def should_send_learning_badge_events(settings):
 # .. setting_description: The name that will appear on the landing page of Studio, as well as in various emails and
 #   templates. (Note: set to 'Studio' by default in the LMS).
 STUDIO_NAME: str
+
+STANDARD_COMPLIANT_XBLOCKS = [
+    "WordCloudBlock",
+]