Sorting not working with postcss in VSCode

[tqwewe]

Describe the bug
Trying to sort classes in a .css/.pcss file does not work with VSCode using "PostCSS" for the file.

To Reproduce
Steps to reproduce the behavior:

1. Install Headwind from the extension store
2. Add to package.json:

   "headwind.classRegex": {
     "css": "\\B@apply\\s+([_a-zA-Z0-9\\s\\-\\:\\/]+);",
     "postcss": "\\B@apply\\s+([_a-zA-Z0-9\\s\\-\\:\\/]+);"
   }

3. Create a file styles.css and add the following:

   .button {
     @apply hover:bg-blue-800 text-white bg-blue-700;
   }

4. Open the VSCode command pallet and run >Headwind: Sort Tailwind CSS Classes
5. See nothing happens
6. Change the active language from PostCSS to CSS
7. Re-run the command in step 4.
8. Classes sort successfully

Expected behavior
I expect that PostCSS language should be supported by headwind and classes should be sorted with @apply.

Screenshots
N/A

Desktop (please complete the following information):

• OS: Fedora
• Browser: Chrome
• Version: v1.7.0

Additional context
N/A