fix: JSON schema override is not applied when schema is overridden

[JaviMaligno]

Summary

Fixes #5499

Changes

• packages/zod/src/v4/classic/to-json-schema.ts - Fixed to properly propagate meta overrides when a schema has a JSON schema override
• packages/zod/src/v4/classic/tests/fix-json-issue.test.ts - Added test case for the fix

Stats: 2 file(s) changed, +32 insertions, -8 deletions

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🤖 Changes prepared with assistance from OSS-Agent

[pullfrog]

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[JaviMaligno]

🤖 Automated PR Review

The core fix is sound - removing the !seen.isParent condition ensures that override functions are applied consistently to all schemas, which is the expected behavior. The test cases properly validate both the fix and edge cases with reused schema instances. The change count expectation update (6 to 9) makes sense as more schemas are now being processed. This is a clean, targeted fix that addresses the reported issue without introducing side effects.

This review was performed by an automated agent.

[colinhacks]

Fixed in #5578

[colinhacks]

Landed in 4.3.0 https://github.com/colinhacks/zod/releases/tag/v4.3.0