v6.4.0-alpha.12

Bug Fixes

• Webpack5: Quit process after finishing a static build (#15483)
• Addon-docs/Angular: Fix numeric args default value handling (#15491)

Maintenance

• Angular: Make Ivy work by default in the angular-cli example (#15280)
• Official-storybook: Fix shortcut for navigating to previous language (#15489)
• Addon-docs: Add docs to standalone example (#7848)
• Build: Update Yarn cache setup in GitHub Actions workflow (#15480)