fix: email should not required and fix error on empty

src/pages/03_customer-management/components/employer/EmployerFormContact.vue

@@ -31,12 +31,16 @@ const telephone = defineModel<string>('telephone');
       hide-bottom-space
       class="col-md-6 col-12"
       :label="$t('form.email')"
-      :rules="[
-        (v: string) => !!v || $t('form.error.required'),
-        (v: string) =>
-          /^[\w-\.]+@([\w-]+\.)+[\w-]{2,4}$/g.test(v) ||
-          $t('form.error.invalid'),
-      ]"
+      :rules="
+        readonly
+          ? undefined
+          : [
+              (v: string) =>
+                !v ||
+                /^[\w-\.]+@([\w-]+\.)+[\w-]{2,4}$/g.test(v) ||
+                $t('form.error.invalid'),
+            ]
+      "
       v-model="mail"
     />
     <q-input