Move ESLint configs to overrides (#24370)

app/javascript/packs/public-path.js

@@ -17,4 +17,5 @@ function formatPublicPath(host = '', path = '') {
 
 const cdnHost = document.querySelector('meta[name=cdn-host]');
 
+// eslint-disable-next-line no-undef
 __webpack_public_path__ = formatPublicPath(cdnHost ? cdnHost.content : '', process.env.PUBLIC_OUTPUT_PATH);