Update Receiving Page to Include Inventory Unit Field

- Modified the receiving controller to include the `inventory_unit` field in the item selection query.
- Updated the frontend components across multiple company pages to reference the new `inventory_unit` field instead of the previous `unit` field, ensuring consistency in data handling.
- Removed hardcoded company code from API calls to allow for dynamic fetching of item information.

(TASK: ERP-030)

backend-node/src/controllers/receivingController.ts

@@ -1262,7 +1262,7 @@ export async function getItems(req: AuthenticatedRequest, res: Response) {
 
 		const dataResult = await pool.query(
 			`SELECT
-        id, item_number, item_name, size AS spec, material, unit,
+        id, item_number, item_name, size AS spec, material, unit, inventory_unit,
         COALESCE(width::text, '') AS width,
         COALESCE(height::text, '') AS height,
         COALESCE(thickness::text, '') AS thickness,