chore(deps): update react monorepo to v19

Author: renovate[bot]

package.json

@@ -99,8 +99,8 @@
         "@testing-library/react": "16.2.0",
         "@types/hast": "3.0.4",
         "@types/lodash-es": "4.17.12",
-        "@types/react": "18.3.20",
-        "@types/react-dom": "18.3.5",
+        "@types/react": "19.0.12",
+        "@types/react-dom": "19.0.4",
         "@types/react-syntax-highlighter": "15.5.13",
         "@types/turndown": "5.0.5",
         "@types/unist": "3.0.3",
@@ -125,8 +125,8 @@
         "lint-staged": "15.5.0",
         "npm-run-all2": "7.0.2",
         "prettier": "3.2.5",
-        "react": "18.3.1",
-        "react-dom": "18.3.1",
+        "react": "19.0.0",
+        "react-dom": "19.0.0",
         "react-icons": "5.5.0",
         "react-markdown": "9.1.0",
         "react-syntax-highlighter": "15.6.1",
@@ -152,8 +152,8 @@
         "mdast-util-gfm-strikethrough": "^2.0.0",
         "micromark-extension-gfm-autolink-literal": "^2.0.0",
         "micromark-extension-gfm-strikethrough": "^2.0.0",
-        "react": "^17.0.0 || ^18.0.0",
-        "react-dom": "^17.0.0 || ^18.0.0",
+        "react": "^17.0.0 || ^18.0.0 || ^19.0.0",
+        "react-dom": "^17.0.0 || ^18.0.0 || ^19.0.0",
         "rehype": "^13.0.0",
         "rehype-minify-whitespace": "^6.0.0",
         "rehype-raw": "^7.0.0",