v7.0.0-alpha.58

Features

• Add --tag option to upgrade script #20075
• HTML: Add html-vite framework #19698
• SvelteKit: Create framework #20039

Maintenance

• Core: Remove postcss feature flag #20003
• Telemetry: Add precedingUpgrade data to dev/build events #20084
• Core: make managerEntries load as ESM, for improved tree-shaking #20070