Add missing file in mini-css-extract-plugin (#25691)

Adds the `hmr/hotModuleReplacement.js` file to the compiled output
that is used in
`packages/next/build/webpack/plugins/mini-css-extract-plugin.ts`.

Fixes #25560



## Bug

- [x] Related issues linked using `fixes #number`
- [ ] Integration tests added


Co-authored-by: JJ Kasper <22380829+ijjk@users.noreply.github.com>

packages/next/taskfile.js

@@ -1468,6 +1468,7 @@ export async function ncc_minimatch(task, opts) {
 // eslint-disable-next-line camelcase
 externals['mini-css-extract-plugin'] =
  'next/dist/compiled/mini-css-extract-plugin'
+
 export async function ncc_mini_css_extract_plugin(task, opts) {
  await task
  .source(
@@ -1485,6 +1486,24 @@ export async function ncc_mini_css_extract_plugin(task, opts) {
  },
  })
  .target('compiled/mini-css-extract-plugin')
+ await task
+ .source(
+ relative(
+ __dirname,
+ resolve(
+ require.resolve('mini-css-extract-plugin'),
+ '../hmr/hotModuleReplacement.js'
+ )
+ )
+ )
+ .ncc({
+ externals: {
+ ...externals,
+ './hmr': './hmr',
+ 'schema-utils': 'next/dist/compiled/schema-utils3',
+ },
+ })
+ .target('compiled/mini-css-extract-plugin/hmr')
  await task
  .source(
  opts.src ||