Static assets do not preserve path structure

[JoeWoodward]

Somewhat related to #3080

Previously static assets preserved their path structure. e.g. app/packs/fonts/sans-serif/black.woff would previously have a manifest entry media/fonts/sans-serif/black.woff but now it removes sans-serif and is just media/images/black.woff

Looks like it was introduced when upgrading to webpack 5 here 6ba995a#diff-716197750a05276089fff034fe03597e5d569526a8ea683fb0022cf69456cbc4

In the old version the folder name was inserted but now only the hash is used https://github.com/rails/webpacker/blob/v6.0.0.beta.7/package/rules/file.js

[sled]

I think this is discussed in issue #2956 looks like this is an issue in the config for webpack-assets-manifest, see my comment here: #2956 (comment)

[JoeWoodward]

Thanks @sled that fixed it! Closing in favor of #2956