Replace or remove webpack magic comments

[matthew-white]

We're moving from Vue CLI (webpack) to Vite in #671. Right now, we use webpack magic comments to give async components and locale files sensible names. You can see webpackChunkName being used in src/util/load-async.js and src/util/i18n.js. I know webpack supports magic comments beyond webpackChunkName, but I think that's the only one we use (not 100% sure though).

Does Vite have an equivalent to webpackChunkName? I didn't see anything from a quick glance at the docs. Vite also seems to give files/assets more sensible names by default compared to webpack. I think probably we could just remove the magic comments entirely.

[matthew-white]

Does Vite have an equivalent to webpackChunkName?

@sadiqkhoja, do you know the answer to this offhand?

[sadiqkhoja]

Yes, vite uses file name to generate chunknames, so probably we don't need to change that. If we want to change the names for any reason, we should be able to use output-chunkfilenames option of rollup.