fix(inventory): asset custody screens crashed on wrong employee name column

Controller selects employees as full_name_ar; both custody_index and
custody_transfer views were reading name_ar, which doesn't exist on
that result set. Live crash: Undefined array key "name_ar" at
custody_index.php:14. Pre-existing bug, unrelated to recent changes —
just hadn't been hit until now. Confirmed via repo-wide grep this was
the only place with the mismatch.

app/Modules/Inventory/Views/assets/custody_index.php

@@ -11,7 +11,7 @@
             <select name="employee_id" class="form-select">
                 <option value="">جميع الموظفين</option>
                 <?php foreach ($employees as $emp): ?>
-                <option value="<?= (int) $emp['id'] ?>" <?= ($employee_id ?? '') == $emp['id'] ? 'selected' : '' ?>><?= e($emp['name_ar']) ?></option>
+                <option value="<?= (int) $emp['id'] ?>" <?= ($employee_id ?? '') == $emp['id'] ? 'selected' : '' ?>><?= e($emp['full_name_ar']) ?></option>
                 <?php endforeach; ?>
             </select>
         </div>

app/Modules/Inventory/Views/assets/custody_transfer.php

@@ -51,7 +51,7 @@
                     <select name="new_employee_id" class="form-select" required>
                         <option value="">-- اختر الموظف --</option>
                         <?php foreach ($employees as $emp): ?>
-                        <option value="<?= (int) $emp['id'] ?>"><?= e($emp['name_ar']) ?></option>
+                        <option value="<?= (int) $emp['id'] ?>"><?= e($emp['full_name_ar']) ?></option>
                         <?php endforeach; ?>
                     </select>
                 </div>