Server side workingDirectory.mode auto detection is incomplete #2077
Description
Context
projectFolderIndicators are pretty comprehensive
But they make an implicit assumption about package.json being a root of a project. This is not always the case. In fact it's rarely the case without accompanying lock files. Lock-files are a better indicator of a project root than the package.json itself.
A lot of projects are using a structure where project.json is a subroot/package/plugin root whereas from non-flat config eslint perspective root level .eslintrc.js file is still the root that those subroot projects use.
A few famous examples:
https://github.com/remix-run/react-router/blob/main/packages/react-router/package.json
https://github.com/elastic/kibana/blob/main/packages/kbn-dependency-usage/package.json
https://github.com/facebook/react/blob/main/packages/react-art/package.json
Problem
When using workingDirectory: { mode = "auto" } in server settings, in aforementioned projects eslintServer changes CWD to nearest package.json folder which breaks projects like above with nested .eslintrc.js
Solution
Use package manager lock files as indicators instead of package.json
Opened a PR: #2076