Add support for unpacked TypedDict to type hint variadic keyword arguments with @validate_call

[Viicos]

Change Summary

Fixes #9619
Requires pydantic/pydantic-core#1451

Related issue number

Checklist

• The pull request title is a good summary of the changes - it will be used in the changelog
• Unit tests for the changes exist
• Tests pass on CI
• Documentation reflects the changes where applicable
• My PR is ready to review, please add a comment including the phrase "please review" to assign reviewers

[cloudflare-workers-and-pages]

Deploying pydantic-docs with    Cloudflare Pages

Latest commit:	068bdc9
Status:	✅  Deploy successful!
Preview URL:	https://7313594d.pydantic-docs.pages.dev
Branch Preview URL:	https://kwargs-td.pydantic-docs.pages.dev

View logs

[codspeed-hq]

CodSpeed Performance Report

Merging #10416 will not alter performance

_{Comparing kwargs-td (068bdc9) with main (9b69920)}

Summary

✅ 38 untouched benchmarks

[sydney-runkle]

LGTM - let's add documentation to both the concepts and api sections of the docs.

Re API section - you can add this to the standard library types area.

[hyperlint-ai]

1 files reviewed, 1 outstanding issue(s) found.

[sydney-runkle]

Looks great, thanks! Thanks for adding a test for the override as well.

[sydney-runkle]

cc @Viicos, I don't think this was addressed:

LGTM - let's add documentation to both the concepts and api sections of the docs.

Going ahead and merging this now, but could you add docs for this next week?

[github-actions]

Coverage report

This PR does not seem to contain any modification to coverable code.