[FIX] product: fix the pricelist report traceback

Currently, if we print the pricelist report after refresh,
the traceback will occur. It has been fixed.

closes odoo/odoo#79968

Task-id: 2584806
X-original-commit: a4c2f01a8e94e7361b25862758c1a20abad6c7aa
Signed-off-by: Victor Feyens (vfe) <vfe@odoo.com>

addons/product/static/src/js/product_pricelist_report.js

@@ -180,7 +180,7 @@ var GeneratePriceList = AbstractAction.extend(StandaloneFieldManagerMixin, {
     _prepareActionReportParams: function () {
         return {
             active_model: this.context.active_model,
-            active_ids: this.context.active_ids,
+            active_ids: this.context.active_ids || '',
             is_visible_title: this.context.is_visible_title || '',
             pricelist_id: this.context.pricelist_id || '',
             quantities: this.context.quantities || [1],