[FIX] product: prevent traceback when print preview report

qwhen user tries 'PRINT PREVIEW' product.report_producttemplatelabel_dymo report
in web_studio, A traceback will appear.

Step to produce:
- Install 'Sales' and 'web_studio'.
- Go to 'web_studio' and open 'Sales'.
- reports > product.report_producttemplatelabel_dymo
- Click PRINT PREVIEW

Error: QWebException: Error while render the template KeyError: 'pricelist'

https://github.com/odoo/odoo/blob/e4390c224c2f59afd6456bcf50910fbe3836b4ca/addons/product/report/product_label_report.py#L23-L26
Here 'pricelist' is not present in return.

sentry-4673780990

closes odoo/odoo#144475

Signed-off-by: Victor Feyens (vfe) <vfe@odoo.com>

addons/product/report/product_label_report.py

@@ -10,6 +10,8 @@ from odoo.exceptions import UserError
 def _prepare_data(env, docids, data):
     # change product ids by actual product object to get access to fields in xml template
     # we needed to pass ids because reports only accepts native python types (int, float, strings, ...)
+
+    layout_wizard = env['product.label.layout'].browse(data.get('layout_wizard'))
     if data.get('active_model') == 'product.template':
         Product = env['product.template'].with_context(display_default_code=False)
     elif data.get('active_model') == 'product.product':
@@ -23,11 +25,11 @@ def _prepare_data(env, docids, data):
         return {
             'quantity': quantity_by_product,
             'page_numbers': 1,
+            'pricelist': layout_wizard.pricelist_id,
         }
     else:
         raise UserError(_('Product model not defined, Please contact your administrator.'))
 
-    layout_wizard = env['product.label.layout'].browse(data.get('layout_wizard'))
     if not layout_wizard:
         return {}