[FIX] point_of_sale: prevent printing empty page

Before this commit, printing a receipt would result in an additional
empty page being printed. This not only wasted paper but also caused
issues. The problem was related to the notification element on the
print page. By removing this element, the issue has been resolved.

opw-3706233

closes odoo/odoo#152731

Signed-off-by: Vlad Stroia (vlst) <vlst@odoo.com>

addons/point_of_sale/static/src/app/printer/printer_service.js

@@ -18,19 +18,7 @@ export class PrinterService {
         this.device = newDevice;
     }
     printWeb(el) {
-        this.renderer.whenMounted({
-            el,
-            callback: () => {
-                var orig = document.querySelector(".pos-receipt");
-                if (orig) {
-                    orig.style.display = "none";
-                }
-                window.print();
-                if (orig) {
-                    orig.style.display = "";
-                }
-            },
-        });
+        this.renderer.whenMounted({ el, callback: window.print });
         return true;
     }
     async printHtml(el, { webPrintFallback = false } = {}) {

addons/point_of_sale/static/src/app/screens/receipt_screen/receipt_screen.scss

@@ -43,4 +43,7 @@
         top: 10px;
         left: 10px;
     }
+    .o-main-components-container {
+        display: none;
+    }
 }