Transitive `fs-extra` dependencies in `storybook`

[ziebam]

After opening https://github.com/storybookjs/storybook/pull/29126, I decided to check what would be needed to completely remove fs-extra from the repository. Here are the transitive dependencies that use it (also a few more replacements we could try to make there).

• [ ] nx/js – chalk, fast-glob, ~fs-extra~ (https://github.com/nrwl/nx/pull/27932). Also tracked in #117.
• [ ] @storybook/bench – fs-extra. The repo is archived, so not sure if it can be tackled in any way.
• [ ] file-system-cache – fs-extra.
• [ ] fork-ts-checker-webpack-plugin – supports Node >=12; chalk, chokidar (3 -> 4), fs-extra, potentially node-abort-controller.
• [ ] broccoli-output-wrapper – just fs-extra, but might not be feasible since it supports Node 10 and >= 12.
• [ ] fs-merger – fs-extra. Potentially could also replace walk-sync with empathic.
• [ ] fast-sourcemap-concat – chalk and fs-extra, but might not be feasible since it supports Node 10 and >= 12.
• [ ] broccoli-concat – fs-extra and a few lodashes, but might not be feasible since it supports Node 10 and >= 12.
• [ ] fixturify – fs-extra. Potentially could also replace walk-sync with empathic.
• [ ] nx – chalk, ~fs-extra~ (https://github.com/nrwl/nx/pull/28019), ora. Also tracked in #117.
• [ ] vite-plugin-inspect – fs-extra.