fix: master docker builds fail because of multi-platform builds can't --load (#31493)

.github/workflows/docker.yml

@@ -82,6 +82,10 @@ jobs:
             --extra-flags "--build-arg INCLUDE_CHROMIUM=false" \
             $PLATFORM_ARG
 
+      - name: Docker pull
+        if: steps.check.outputs.python || steps.check.outputs.frontend || steps.check.outputs.docker
+        run:  docker pull apache/superset:GHA-${GITHUB_RUN_ID}
+
       - name: Print docker stats
         if: steps.check.outputs.python || steps.check.outputs.frontend || steps.check.outputs.docker
         run: |

superset/__init__.py

@@ -34,7 +34,8 @@ from superset.security import SupersetSecurityManager  # noqa: F401
 # All of the fields located here should be considered legacy. The correct way
 # to declare "global" dependencies is to define it in extensions.py,
 # then initialize it in app.create_app(). These fields will be removed
-# in subsequent PRs as things are migrated towards the factory pattern
+# in subsequent PRs as things are migrated towards the factory
+# pattern
 app: Flask = current_app
 cache = cache_manager.cache
 conf = LocalProxy(lambda: current_app.config)