fix(build): remove .babelrc shadowing babel.config.js and align Babel to 7 (Closes #213)

Author: SakethSumanBathini

frontend/.babelrc

@@ -39,10 +39,16 @@
   },
   "private": true,
   "devDependencies": {
-    "@babel/core": "^8.0.1",
-    "@babel/preset-env": "^8.0.2",
+    "@babel/core": "^7.29.7",
     "@testing-library/react-native": "^14.0.1",
     "babel-jest": "^30.4.1",
+    "babel-preset-expo": "~56.0.18",
     "jest": "^30.4.2"
+  },
+  "jest": {
+    "testEnvironment": "node",
+    "transform": {
+      "^.+\\.[jt]sx?$": "babel-jest"
+    }
   }
 }