⬆️📜 Update react monorepo to v19.2.1 (#298)

This PR contains the following updates:

| Package | Change |
[Age](https://docs.renovatebot.com/merge-confidence/) |
[Confidence](https://docs.renovatebot.com/merge-confidence/) |
|---|---|---|---|
| [react](https://react.dev/)
([source](https://redirect.github.com/facebook/react/tree/HEAD/packages/react))
| [`19.2.0` ->
`19.2.1`](https://renovatebot.com/diffs/npm/react/19.2.0/19.2.1) |
![age](https://developer.mend.io/api/mc/badges/age/npm/react/19.2.1?slim=true)
|
![confidence](https://developer.mend.io/api/mc/badges/confidence/npm/react/19.2.0/19.2.1?slim=true)
|
| [react-dom](https://react.dev/)
([source](https://redirect.github.com/facebook/react/tree/HEAD/packages/react-dom))
| [`19.2.0` ->
`19.2.1`](https://renovatebot.com/diffs/npm/react-dom/19.2.0/19.2.1) |
![age](https://developer.mend.io/api/mc/badges/age/npm/react-dom/19.2.1?slim=true)
|
![confidence](https://developer.mend.io/api/mc/badges/confidence/npm/react-dom/19.2.0/19.2.1?slim=true)
|

---

### Release Notes

<details>
<summary>facebook/react (react)</summary>

###
[`v19.2.1`](https://redirect.github.com/facebook/react/releases/tag/v19.2.1):
19.2.1 (December 3rd, 2025)

[Compare
Source](https://redirect.github.com/facebook/react/compare/v19.2.0...v19.2.1)

##### React Server Components

- Bring React Server Component fixes to Server Actions
([@&#8203;sebmarkbage](https://redirect.github.com/sebmarkbage)
[#&#8203;35277](https://redirect.github.com/facebook/react/pull/35277))

</details>

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