chore(deps): update react monorepo to v19

package.json

@@ -38,8 +38,8 @@
     "typescript": "~5.7.0"
   },
   "resolutions": {
-    "@types/react": "^19.0.0",
-    "@types/react-dom": "^19.0.0"
+    "@types/react": "^18.0.0",
+    "@types/react-dom": "^18.0.0"
   },
   "prettier": "@spotify/prettier-config",
   "lint-staged": {

packages/app/package.json

@@ -36,8 +36,8 @@
     "@mui/material": "^6.0.0",
     "@mui/icons-material": "^6.0.0",
     "history": "^5.0.0",
-    "react": "^19.0.0",
-    "react-dom": "^19.0.0",
+    "react": "^18.0.0",
+    "react-dom": "^18.0.0",
     "react-router": "7.0.2",
     "react-router-dom": "7.0.2",
     "react-use": "^17.0.0"

plugins/catalog-backend-module-gitea/package.json

@@ -32,7 +32,7 @@
     "react-use": "^17.2.4"
   },
   "peerDependencies": {
-    "react": "^16.13.1 || ^17.0.0 || ^18.0.0 || ^19.0.0"
+    "react": "^16.13.1 || ^17.0.0 || ^18.0.0"
   },
   "devDependencies": {
     "@backstage/cli": "^0.29.0",