fix : corrections diverses

frontend/pages/admin/user/[[id]].vue

@@ -45,7 +45,7 @@ definePageMeta({
 import {computed, reactive, ref, watch} from 'vue'
 import {ROLE} from '~/utils/constants'
 import {createUser, updateUser, getUser} from '~/services/auth'
-import type {UserData, UserFormData} from '~/services/dto/user-data'
+import type {UserData, UserFormData, UserPayload} from '~/services/dto/user-data'
 
 const route = useRoute()
 const router = useRouter()
@@ -105,10 +105,12 @@ async function validate() {
     const normalizedRole = form.role.trim()
     const normalizedPassword = form.password.trim()
 
-    const basePayload = {
+    const basePayload: UserPayload = {
         username: normalizedUsername,
         roles: normalizedRole ? [normalizedRole] : undefined,
-        password: normalizedPassword || undefined
+    }
+    if (normalizedPassword) {
+        basePayload.password = normalizedPassword
     }
 
     if (userId.value) {