[Tracking]: Portable stories

[yannbf]

Describe the bug

This is a tracking issue for work related to Portable Stories in Storybook 8.

Storybook 8.0 - Refined API for existing integrators (React/Vue3)

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1. Portable stories - Pass story context to play function #25877
   portable stories +1
   
2. Portable stories - rename testing-utils to portable-stories in preview-api and renderers #25927
   +0
   
3. [Feature Request]: Support loaders in test #22633
   feature request +1
   
4. [Bug]: import { composeStories } from "@storybook/react" in a playwright environment creates TypeError #24056
   bug portable stories sev:S3 +3
   
5. Portable stories - Define and document a pattern for using preview annotations from addons #25876
   documentation portable stories +2
   

   
6. Portable stories - Make context optional in reused play function #26251
   +0
   
7. Make sure portable stories API won't break in node environments #26115
   +0
   
8. Add portable stories documentation on React Native + portable stories in the React Native repo #26189
   +0
   
9. Documentation: Extendability and Re-usability of the play function #21573
   bug csf3 documentation +3
   

Storybook 8.x - New integrations, Playwright CT support

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1. Add types export to preview entries of addons #26045
   +0
   
2. Portable stories - Create experimental API for Playwright CT in Vue3 #26192
   +0
   
3. Portable stories - Create experimental API for Playwright CT in React #26061
   portable stories +1
   
4. Portable stories - Set up examples for Jest, Vitest, Playwright CT #26026
   +0
   
5. Create API documentation for portable-stories #25928
   +0
   
6. Portable stories - Create compose functions for Nextjs #25880
   nextjs portable stories +2
   
7. Any additional documentation needed for Next.js #26297
   +0
   
8. [Question]: How to mount NextRouter in tests when using framework @storybook/nextjs #22538
   bug has workaround nextjs portable stories react sev:S2 +6
   
9. Portable stories - Document recipes for Jest, Vitest, Playwright CT #26090
   documentation portable stories +2
   
10. Portable stories - Document common use cases and limitations #25879
    portable stories +1
    
11. Define pattern for story reuse in CSF3 #15954
    bug csf3 react +3
    
12. default component args missing from importing named export stories in unit tests #14278
    args feature request +2
    
13. Spike svelte native format support in portable stories
14. Portable stories - Create compose functions for Svelte #25878
    portable stories svelte +2
    
15. Portable stories - Create compose functions for SvelteKit #25881
    portable stories sveltekit +2
    
16. Any additional documentation needed for Svelte

Stretch goal - Cypress CT

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1. Create experimental Cypress CT portable stories API
2. Set up Cypress CT
3. Write recipes for portable stories in Cypress CT