bug #2902 [Autocomplete] Force installation of CSS files for AssetMapper (leevigraham)

This PR was merged into the 2.x branch.

Discussion
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[Autocomplete]  Force installation of CSS files for AssetMapper

| Q             | A
| ------------- | ---
| Bug fix?      | yes
| New feature?  | no
| Docs?         | no
| Issues        | Fix #2901
| License       | MIT

Explicitly add missing css files defined in `autoimport` in [`/src/Autocomplete/assets/package.json`](https://github.com/symfony/ux/blob/2.x/src/Autocomplete/assets/package.json#L31-L35)

Commits
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d4559c5 Fixes #2901 - [Autocomplete] - Asset mapper installs wrong css file

Author: Kocal

src/Autocomplete/assets/package.json

@@ -37,7 +37,10 @@
         },
         "importmap": {
             "@hotwired/stimulus": "^3.0.0",
-            "tom-select": "^2.2.2"
+            "tom-select": "^2.2.2",
+            "tom-select/dist/css/tom-select.default.css": "^2.2.2",
+            "tom-select/dist/css/tom-select.bootstrap4.css": "^2.2.2",
+            "tom-select/dist/css/tom-select.bootstrap5.css": "^2.2.2"
         }
     },
     "peerDependencies": {