[6.0] improve error message compilation scss

[hans2103]

Pull Request for no issue

Summary of Changes

We're clueless when working on a failed scss to css compilation.
This PR will adjust the error message thrown with a reference to the error and the file.

Testing Instructions

• open build/media_source/com_media/scss/media-manager.scss and make a typo in @import "variables";
  • reason is to be sure that the scss to css will fail
  • I've changes variables to vacriables
• run npm run build:css
  • compilation will fail
• apply this patch
• run npm run build:css
  • compilation will fail
• compare the error messages before and after applying this patch.

Actual result BEFORE applying this Pull Request

file:///path/to/joomla/build/build-modules-js/stylesheets/handle-scss.mjs:19
    throw new Error(error.formatted);
          ^

Error
    at handleScssFile (file:///path/to/joomla/build/build-modules-js/stylesheets/handle-scss.mjs:19:11)
    at process.processTicksAndRejections (node:internal/process/task_queues:95:5)

Expected result AFTER applying this Pull Request

node:internal/process/promises:391
    triggerUncaughtException(err, true /* fromPromise */);
    ^

Error: Error: Can't find stylesheet to import.
  ╷
2 │ @import "vacriables";
  │         ^^^^^^^^^^^^
  ╵
  ../../../../build/media_source/com_media/scss/media-manager.scss 2:9  root stylesheet
    at handleCompileResponse (/path/to/joomla/public_html/node_modules/sass-embedded/dist/lib/src/compiler/utils.js:155:15)
    at AsyncCompiler.compileRequestAsync (/path/to/joomla/node_modules/sass-embedded/dist/lib/src/compiler/async.js:100:54)
    at process.processTicksAndRejections (node:internal/process/task_queues:95:5)
    at async compileAsync (/path/to/joomla/node_modules/sass-embedded/dist/lib/src/compile.js:36:16)
    at async handleScssFile (file:///path/to/joomla/build/build-modules-js/stylesheets/handle-scss.mjs:16:21)

With this error message I can find the failure easier then before.

Link to documentations

Please select:

• Documentation link for docs.joomla.org:

• No documentation changes for docs.joomla.org needed

• Pull Request link for manual.joomla.org:

• No documentation changes for manual.joomla.org needed