[FIX] point_of_sale: add error message when image are not loaded

Current behavior:
When trying to print a receipt offline, the image will not be loaded
and you get a traceback.
Now the receipt is printed, and an error is logged in the console if
the images couldn't be loaded

Steps to reproduce:
- Add a logo to the company
- Launch PoS
- In the browser devtools network tab turn the connection down
- Do an order, and try to print the receipt
- You get a traceback and the receipt is not printed

opw-3811663

closes odoo/odoo#162451

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

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

@@ -38,7 +38,11 @@ export class PrinterService {
     async print(component, props, options) {
         const el = await this.renderer.toHtml(component, props);
         // Load all images before printing
-        await loadAllImages(el);
+        try {
+            await loadAllImages(el);
+        } catch (e) {
+            console.error("Images could not be loaded correctly", e);
+        }
         return await this.printHtml(el, options);
     }
     is = () => Boolean(this.device?.printReceipt);