fix(backend): resolve ESLint errors for Jest config and test setup files

- Add allowDefaultProject for JS config files in eslint.config.mjs

- Add no-console: off for test setup files

- Fix async arrow function without await in jest-e2e.setup.ts

- Remove unused eslint-disable directives

backend/package.json

@@ -15,12 +15,12 @@
     "start:debug": "nest start --debug --watch",
     "start:prod": "node dist/main",
     "lint": "eslint \"{src,apps,libs,test}/**/*.ts\" --fix",
-    "test": "jest --forceExit",
-    "test:debug-handles": "jest --detectOpenHandles",
-    "test:watch": "jest --watch",
-    "test:cov": "jest --coverage",
-    "test:debug": "node --inspect-brk -r tsconfig-paths/register -r ts-node/register node_modules/.bin/jest --runInBand",
-    "test:e2e": "jest --config ./test/jest-e2e.json",
+    "test": "jest --config jest.config.js --forceExit",
+    "test:debug-handles": "jest --config jest.config.js --detectOpenHandles",
+    "test:watch": "jest --config jest.config.js --watch",
+    "test:cov": "jest --config jest.config.js --coverage",
+    "test:debug": "node --inspect-brk -r tsconfig-paths/register -r ts-node/register node_modules/.bin/jest --config jest.config.js --runInBand",
+    "test:e2e": "jest --config ./test/jest-e2e.json --forceExit",
     "seed": "ts-node -r tsconfig-paths/register src/database/seeds/run-seed.ts"
   },
   "dependencies": {
@@ -115,23 +115,6 @@
     "typescript": "^5.7.3",
     "typescript-eslint": "^8.57.1"
   },
-  "jest": {
-    "moduleFileExtensions": [
-      "js",
-      "json",
-      "ts"
-    ],
-    "rootDir": "src",
-    "testRegex": ".*\\.spec\\.ts$",
-    "transform": {
-      "^.+\\.(t|j)s$": "ts-jest"
-    },
-    "collectCoverageFrom": [
-      "**/*.(t|j)s"
-    ],
-    "coverageDirectory": "../coverage",
-    "testEnvironment": "node"
-  },
   "main": "index.js",
   "directories": {
     "test": "test"