fix(prisma): minor pay-period's type fixing

prisma/migrations/20250724191659_create_pay_period_view/migration.sql

@@ -9,6 +9,7 @@ WITH
   ),
   bounds AS (
     SELECT
+    --ajouter vérification de la période actuel, validations et revoir la logique
       (now()::date - INTERVAL '6 months')::date AS start_bound,
       (now()::date + INTERVAL '1 month')::date AS end_bound,
       anchor.anchor_date

prisma/schema.prisma

@@ -131,10 +131,10 @@ model LeaveRequestsArchive {
 //pay-period vue
 view PayPeriods {
   period_number Int      @id
-  start_date    DateTime? @db.Date
+  start_date    DateTime @db.Date
-  end_date      DateTime? @db.Date
+  end_date      DateTime @db.Date
-  year          Int?
+  year          Int
-  label         String?
+  label         String
 
   @@map("pay_period")
 }