Populate sourcemap `ignoreList` when Webpack is used (#71821)
This enables DevTools (e.g. Chrome debugger) to collapse stackframes from 3rd party dependencies.
Webpack only. Turbopack added support in https://github.com/vercel/next.js/pull/71770. Replays from RSC will follow.
Had to fork `EvalSourceMapDevToolPlugin` (with blessing from @sokra) to be able to inject `ignoreList`.
For `source-map`, we can use https://github.com/mondaychen/devtools-ignore-webpack-plugin/ instead since we can operate on the assets on disk. I inlined it to iterate on it faster. Though it'd be faster for bundling to also fork `SourceMapDevToolPlugin` since `DevToolsIgnorePlugin` adds another parse/serialize roundtrip.
## test plan
We'll start leveraging `ignoreList` in the terminal as well which will allow us to write automated tests. I haven't found a way to automatically test this ignore-listing in browsers.
Note that this is on Chrome Beta. Chrome Stable does not ignore-list logged stacks yet. Only stacks of the actual `console` call or in the debugger.
(the frame from our console instrumentation is a bug that may be fixed once we populate our own sourcemaps)
`pnpm debug dev test/e2e/app-dir/server-source-maps/fixtures/default/`
`/ssr-error-log` shows
browser:
Node.js debugger doesn't seem to work. Will look at that in a follow-up
