build(deps): update storybook monorepo to v8.4.6

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
@storybook/addon-a11y (source)	8.4.5 -> 8.4.6
@storybook/addon-controls (source)	8.4.5 -> 8.4.6
@storybook/addon-docs (source)	8.4.5 -> 8.4.6
@storybook/addon-mdx-gfm (source)	8.4.5 -> 8.4.6
@storybook/addon-themes (source)	8.4.5 -> 8.4.6
@storybook/blocks (source)	8.4.5 -> 8.4.6
@storybook/builder-vite (source)	8.4.5 -> 8.4.6
@storybook/html (source)	8.4.5 -> 8.4.6
@storybook/manager-api (source)	8.4.5 -> 8.4.6
@storybook/preview-api (source)	8.4.5 -> 8.4.6
@storybook/web-components-vite (source)	8.4.5 -> 8.4.6
storybook (source)	8.4.5 -> 8.4.6

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Release Notes

storybookjs/storybook (@​storybook/addon-a11y)

v8.4.6

Compare Source

• Addon Test: Use pathe for better windows support - #​29676, thanks @​yannbf!
• Angular: Default to standalone components in Angular v19 - #​29677, thanks @​ingowagner!
• Frameworks: Add Vite 6 support - #​29710, thanks @​yannbf!
• Portable stories: Support multiple annotation notations from preview - #​29733, thanks @​yannbf!
• React: Upgrade react-docgen-typescript to support Vite 6 - #​29724, thanks @​yannbf!
• Svelte: Support @sveltejs/vite-plugin-svelte v5 - #​29731, thanks @​JReinhold!

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[benelan]

👍