Fix Corepack prompt on Devcontainer (#31729)

.devcontainer/Dockerfile

@@ -11,5 +11,8 @@ RUN apt-get update && \
     export DEBIAN_FRONTEND=noninteractive && \
     apt-get -y install --no-install-recommends libicu-dev libidn11-dev ffmpeg imagemagick libvips42 libpam-dev
 
+# Disable download prompt for Corepack
+ENV COREPACK_ENABLE_DOWNLOAD_PROMPT=0
+
 # Move welcome message to where VS Code expects it
 COPY .devcontainer/welcome-message.txt /usr/local/etc/vscode-dev-containers/first-run-notice.txt

.devcontainer/codespaces/devcontainer.json

@@ -39,7 +39,7 @@
   },
 
   "onCreateCommand": "git config --global --add safe.directory ${containerWorkspaceFolder}",
-  "postCreateCommand": "COREPACK_ENABLE_DOWNLOAD_PROMPT=0 bin/setup",
+  "postCreateCommand": "bin/setup",
   "waitFor": "postCreateCommand",
 
   "customizations": {