feat(define-props-destructuring): add only-when-assigned option

[rzzf]

resolves #3006

[changeset-bot]

🦋 Changeset detected

Latest commit: cba9f25

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

Name	Type
eslint-plugin-vue	Minor

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[waynzh]

Thanks, LGTM!

[Copilot]

Pull request overview

This PR fixes a false positive issue in the vue/define-props-destructuring rule where it incorrectly reported an error when defineProps was called without any assignment (e.g., defineProps(['foo']) or defineProps<{ foo?: string }>()).

Changes:

• Modified the rule logic to check if there's a left-hand side assignment before enforcing destructuring preferences
• Added comprehensive test coverage for the bug scenario with multiple variants (array syntax, TypeScript syntax, with/without withDefaults)

Reviewed changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated no comments.

File	Description
lib/rules/define-props-destructuring.js	Added check for left-hand side assignment to prevent false positives when defineProps is called without assignment
lib/utils/index.js	Exported the existing getLeftOfDefineProps utility function for use in the rule
tests/lib/rules/define-props-destructuring.js	Added 8 new valid test cases covering different scenarios where defineProps is called without assignment
.changeset/shy-ends-help.md	Added changeset documenting the bug fix as a patch version

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[FloEdelmann]

See #3006 (comment).

[rzzf]

Hi, I’ve added the only-when-assigned option. When you have time, please review again, thanks!

[FloEdelmann]

Thank you! 🙂