v6.2.0-alpha.6

Features

• Main.js: Add previewHead, previewBody, managerHead presets (#13432)

Bug Fixes

• Core: Fix modulesCount cache storage and retrieval (#13431)
• UI: Fix null ref in sidebar (#13423)

Maintenance

• Components: Cleanup circular dependencies (#13439)
• Core: Generate bundle size report for prebuilt manager (#13425)
• CI: Speed up CircleCI workflows (#13320)

Dependency Upgrades

• Update react-popper-tooltip and @popperjs/core for react17 (#13434)