8.0.0-rc.4

• Actions: Fix attaching action after a spy is restored to original function - #26364, thanks @kasperpeulen!
• CLI: Add explicit actions to header story - #26352, thanks @kasperpeulen!
• CLI: Automigration for upgrading storybook related dependencies - #26377, thanks @ndelangen!
• CLI: Fix doctor compatibility check - #26363, thanks @yannbf!
• CLI: Fix fn reference in preact templates - #26384, thanks @kasperpeulen!
• CLI: Remove duplicated dependency warning - #26385, thanks @yannbf!
• CLI: Vite migration link (shorter) - #26379, thanks @ndelangen!
• Composition: Fix refs not loading when there's multiple - #26356, thanks @ndelangen!
• Dependencies: Broaden esbuild version range - #26405, thanks @ndelangen!
• Maintenance: Replace @storybook/testing-library with @storybook/test in monorepo - #26351, thanks @ndelangen!
• Maintenance: What's new modal changes - #26355, thanks @kasperpeulen!
• Portable Stories: Fix injected root element changing layout - #26387, thanks @JReinhold!
• React: Support all React component types in JSX Decorator - #26382, thanks @yannbf!