Enable manual Crowdin runs (#16009)

Co-authored-by: Chiedo <chiedo@users.noreply.github.com>

.github/workflows/crowdin.yml

@@ -3,6 +3,7 @@
 name: Crowdin Sync
 
 on:
+  workflow_dispatch:
   push:
     branches:
       - main
@@ -47,4 +48,4 @@ jobs:
           # This token was created by logging into Crowdin with the octoglot user
           CROWDIN_PERSONAL_TOKEN: ${{ secrets.CROWDIN_PERSONAL_TOKEN }}
 
-          
+