Upgrade image-size to 2.0

[netroy]

What I did

This PR upgrades image-size to 2.0.0, and removed the dependency on sharp for avif files.

Related PR storybookjs/vite-plugin-storybook-nextjs#32

Checklist for Contributors

Testing

The changes in this PR are covered in the following automated tests:

• stories
• unit tests
• integration tests
• end-to-end tests

Manual testing

This section is mandatory for all contributions. If you believe no manual test is necessary, please state so explicitly. Thanks!

Documentation

• Add or update documentation reflecting your changes
• If you are deprecating/removing a feature, make sure to update
  MIGRATION.MD

Checklist for Maintainers

• When this PR is ready for testing, make sure to add ci:normal, ci:merged or ci:daily GH label to it to run a specific set of sandboxes. The particular set of sandboxes can be found in code/lib/cli-storybook/src/sandbox-templates.ts

• Make sure this PR contains one of the labels below:

  Available labels

  • bug: Internal changes that fixes incorrect behavior.
  • maintenance: User-facing maintenance tasks.
  • dependencies: Upgrading (sometimes downgrading) dependencies.
  • build: Internal-facing build tooling & test updates. Will not show up in release changelog.
  • cleanup: Minor cleanup style change. Will not show up in release changelog.
  • documentation: Documentation only changes. Will not show up in release changelog.
  • feature request: Introducing a new feature.
  • BREAKING CHANGE: Changes that break compatibility in some way with current major version.
  • other: Changes that don't fit in the above categories.

🦋 Canary release

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core team members can create a canary release here or locally with gh workflow run --repo storybookjs/storybook canary-release-pr.yml --field pr=<PR_NUMBER>

Greptile Summary

This PR upgrades the image-size package to version 2.0.0 and removes the sharp dependency, simplifying AVIF image handling in the Next.js framework integration.

• Upgraded image-size to 2.0.0 in code/frameworks/nextjs/package.json for native AVIF support
• Removed sharp from optionalDependencies as it's no longer needed
• Simplified code/frameworks/nextjs/src/next-image-loader-stub.ts by removing special AVIF handling code
• Updated import from imageSizeOf to imageSize to match new API

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[greptile-apps]

LGTM

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[greptile-apps]

LGTM

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[netroy]

Marking this as draft until storybookjs/vite-plugin-storybook-nextjs#32 is merged. After that we can remove the 1.1.1 of image-size that's being pulled in a transitive dependency.

[greptile-apps]

LGTM

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[valentinpalkovic]

Superseded by #30741. I had to update the yarn.lock file and I wasn't allowed to push to your PR. Otherwise, great work. LGTM!