[6.0] Add "chosen" dummy asset to plg_behaviour_compat6 asset (joomla#46292)

Author: Fedik

build/media_source/plg_behaviour_compat6/removed.asset.json

@@ -9,6 +9,20 @@
       "name": "wcpolyfill",
       "type": "script",
       "uri": ""
+    },
+    {
+      "name": "chosen",
+      "type": "style",
+      "uri": ""
+    },
+    {
+      "name": "chosen",
+      "type": "script",
+      "uri": ""
+    },
+    {
+      "name": "chosen",
+      "type": "preset"
     }
   ]
 }