Restore camera functionality and update new sales form component

Refactors CameraModal.tsx to restore camera functionality, updates NewSaleForm to NewSaleFormMultiProduct in FireworksApp.tsx.

Replit-Commit-Author: Agent
Replit-Commit-Session-Id: c7151ec8-4e6b-4fcf-b628-65b094ac18fd
Replit-Commit-Screenshot-Url: https://storage.googleapis.com/screenshot-production-us-central1/0715008c-7244-40f4-befc-26c014852236/c7151ec8-4e6b-4fcf-b628-65b094ac18fd/PgD91fN

client/src/components/FireworksApp.tsx

@@ -2,7 +2,7 @@ import { useState } from 'react';
 import { useQuery } from '@tanstack/react-query';
 import { Tabs, TabsContent, TabsList, TabsTrigger } from '@/components/ui/tabs';
 import { Shield, Flame, Plus, History } from 'lucide-react';
-import NewSaleForm from './NewSaleForm';
+import NewSaleFormMultiProduct from './NewSaleFormMultiProduct';
 import SalesHistory from './SalesHistory';
 import { useAuth } from '@/hooks/useAuth';
 import { useStoreContext } from '@/hooks/useStoreContext';
@@ -68,7 +68,7 @@ export default function FireworksApp() {
           </TabsList>
 
           <TabsContent value="nouvelle-vente">
-            <NewSaleForm />
+            <NewSaleFormMultiProduct />
           </TabsContent>
 
           <TabsContent value="historique">