misc: update source map paths for bundled Next.js runtime (#71779)

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This changes the generated source map to not do the
"webpack://next/dist/<file>" and instead use the relative path. this
allows us to use the vanilla ignoreList "node_modules" config to also
also ignore those files

![CleanShot 2024-10-23 at 22 41
37@2x](https://github.com/user-attachments/assets/387bdf1e-c507-459c-8740-8e9587ebb0ca)

![CleanShot 2024-10-23 at 22 42
03@2x](https://github.com/user-attachments/assets/5fc45209-292b-4f53-8e86-541def464286)

packages/next/webpack.config.js

@@ -154,6 +154,7 @@ module.exports = ({ dev, turbo, bundleType, experimental }) => {
         experimental ? '-experimental' : ''
       }.runtime.${dev ? 'dev' : 'prod'}.js`,
       libraryTarget: 'commonjs2',
+      devtoolModuleFilenameTemplate: './[resource-path]',
     },
     devtool: process.env.NEXT_SERVER_EVAL_SOURCE_MAPS
       ? 'eval-source-map'