import ods/xls en + de csv

fix modal behavior on close, fine tune import file modal

src/app/admin/campaigns/[id]/propositions/page.tsx

@@ -7,7 +7,7 @@ import { campaignService, propositionService } from '@/lib/services';
 import AddPropositionModal from '@/components/AddPropositionModal';
 import EditPropositionModal from '@/components/EditPropositionModal';
 import DeletePropositionModal from '@/components/DeletePropositionModal';
-import ImportCSVModal from '@/components/ImportCSVModal';
+import ImportFileModal from '@/components/ImportFileModal';
 import { Button } from '@/components/ui/button';
 import { Card, CardContent, CardDescription, CardHeader, CardTitle } from '@/components/ui/card';
 import { Badge } from '@/components/ui/badge';
@@ -154,7 +154,7 @@ function CampaignPropositionsPageContent() {
             <div className="flex gap-2">
               <Button variant="outline" onClick={() => setShowImportModal(true)}>
                 <Upload className="w-4 h-4 mr-2" />
-                Importer CSV
+                Importer
               </Button>
               <Button onClick={() => setShowAddModal(true)} size="lg">
                 ✨ Nouvelle proposition
@@ -323,7 +323,7 @@ function CampaignPropositionsPageContent() {
           />
         )}
 
-        <ImportCSVModal
+        <ImportFileModal
           isOpen={showImportModal}
           onClose={() => setShowImportModal(false)}
           onImport={handleImportPropositions}