Migrate away from unmaintained eslint-config-react-app

[MikeMcC399]

Issue

• The ESLint configuration eslint-config-react-app belongs to the abandoned and unsupported https://github.com/facebook/create-react-app repo from the package https://github.com/facebook/create-react-app/tree/main/packages/eslint-config-react-app last published in April 2022.

cypress-realworld-app/package.json

Line 104 in 31b7fa5

"eslint-config-react-app": "^7.0.1",

• eslint-config-react-app is not available for ESLint v9 flat config due to

  "peerDependencies": {
    "eslint": "^8.0.0"
  },

• PR Vite upgrade #1381 in July 2023 transitioned this repo from create-react-app to Vite

[MikeMcC399]

• PR made changes to the conifg #1586 attempted to resolve this issue - so far without success