[FIX] point_of_sale: overflowing barcode scanner

After the redesign of pos, opening the barcode
scanner on mobile would cause an issue in the
page alignement.

closes odoo#176466

Task: 4110781
Signed-off-by: Joseph Caburnay (jcb) <jcb@odoo.com>

Author: vlst-odoo

addons/point_of_sale/static/src/app/screens/product_screen/camera_barcode_scanner.js

@@ -8,6 +8,7 @@ export class CameraBarcodeScanner extends BarcodeVideoScanner {
         this.barcodeScanner = useService("barcode_reader");
         this.sound = useService("sound");
         this.props = {
+            ...this.props,
             facingMode: "environment",
             onResult: (result) => this.onResult(result),
             onError: console.error,