chore(kitchensink): move to Sanity Sandbox organization

[ryanbonial]

Description

This PR changes the Kitchensink test app to use projects that belong to the Sanity Sandbox organization so that it can be more easily tested and developed inside of the Sanity Dashboard. The main changes include:

• Replaced the player document type with a movie document type in the multi-resource tests
• Updated project IDs and organization IDs to use the Sanity Sandbox organization
• Changed the dev command to use sanity dev instead of vite
• Updated all references to the old project throughout the codebase
• Modified the E2E tests to work with the new movie schema instead of player schema

What to review

• The multi-resource route component now uses movie documents instead of player documents
• Updated schema definitions and projections for the movie type
• Configuration changes in sanity.config.ts, sanity.cli.ts, and package.json
• E2E test modifications to work with the new document type

Testing

The E2E tests have been updated to work with the new document types and should pass with the new configuration.

Fun gif

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Project	Deployment	Preview	Comments	Updated (UTC)
sdk-docs	Ready	Preview	Comment	Sep 10, 2025 8:02pm
sdk-kitchensink-react	Ready	Preview	Comment	Sep 10, 2025 8:02pm

[cngonzalez]

LGTM! Should we get rid of v28v5k8m entirely?

[ryanbonial]

Thanks. No, we should not get rid of that project it is used for https://sdk-explorer.sanity.io