fix: [영업관리] codebridge DB 테이블 exists 검증 오류 수정

- tenant_prospects, tenants, sales_products 등이 codebridge DB에 있으므로
  exists:테이블명 → exists:codebridge.테이블명 으로 변경
- SalesScenarioController, SalesContractController, ConsultationController,
  SalesProductController 일괄 수정

app/Http/Controllers/Sales/SalesProductController.php

@@ -55,7 +55,7 @@ public function productList(Request $request): View
     public function store(Request $request): JsonResponse
     {
         $validated = $request->validate([
-            'category_id' => 'required|exists:sales_product_categories,id',
+            'category_id' => 'required|exists:codebridge.sales_product_categories,id',
             'code' => 'required|string|max:50',
             'name' => 'required|string|max:100',
             'description' => 'nullable|string',
@@ -164,7 +164,7 @@ public function reorder(Request $request): JsonResponse
     {
         $validated = $request->validate([
             'orders' => 'required|array',
-            'orders.*.id' => 'required|exists:sales_products,id',
+            'orders.*.id' => 'required|exists:codebridge.sales_products,id',
             'orders.*.order' => 'required|integer|min:0',
         ]);