chore(deps): bump react from 19.2.0 to 19.2.1 in /examples/hello-world

Bumps [react](https://github.com/facebook/react/tree/HEAD/packages/react) from 19.2.0 to 19.2.1.
- [Release notes](https://github.com/facebook/react/releases)
- [Changelog](https://github.com/facebook/react/blob/main/CHANGELOG.md)
- [Commits](https://github.com/facebook/react/commits/v19.2.1/packages/react)

---
updated-dependencies:
- dependency-name: react
  dependency-version: 19.2.1
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

examples/hello-world/package.json

@@ -3,7 +3,7 @@
   "version": "0.1.0",
   "private": true,
   "dependencies": {
-    "react": "^19.1.1",
+    "react": "^19.2.1",
     "react-datepicker": "^8.10.0",
     "react-dom": "^19.1.1",
     "react-scripts": "5.0.1"

examples/hello-world/yarn.lock

@@ -7181,7 +7181,7 @@ __metadata:
   version: 0.0.0-use.local
   resolution: "hello-world@workspace:."
   dependencies:
-    react: "npm:^19.1.1"
+    react: "npm:^19.2.1"
     react-datepicker: "npm:^8.10.0"
     react-dom: "npm:^19.1.1"
     react-scripts: "npm:5.0.1"
@@ -11087,10 +11087,10 @@ __metadata:
   languageName: node
   linkType: hard
 
-"react@npm:^19.1.1":
-  version: 19.2.0
-  resolution: "react@npm:19.2.0"
-  checksum: 10c0/1b6d64eacb9324725bfe1e7860cb7a6b8a34bc89a482920765ebff5c10578eb487e6b46b2f0df263bd27a25edbdae2c45e5ea5d81ae61404301c1a7192c38330
+"react@npm:^19.2.1":
+  version: 19.2.1
+  resolution: "react@npm:19.2.1"
+  checksum: 10c0/2b5eaf407abb3db84090434c20d6c5a8e447ab7abcd8fe9eaf1ddc299babcf31284ee9db7ea5671d21c85ac5298bd632fa1a7da1ed78d5b368a537f5e1cd5d62
   languageName: node
   linkType: hard