[FIX] stock: allow "Print" of MRP reception report

During the OWL refactoring of the reception report, the "Print" button
was hardcoded to only work for pickings. Unfortunately this means the
button did NOT work when the report was opened for a MO.

This is due to the report printing being dependent on the report's
context values which can either be `default_picking_ids` or
`default_production_ids` (and this is by design to avoid additional file
extensions to handle both cases).

When this button was used in the previous legacy_web_report's
client_action, the entire action's context + data used to be passed as
part of the Print action:

https://github.com/odoo/odoo/blob/30fcb2e60fed17a473353b21bac4916e9ab77b10/addons/stock/static/src/legacy_web_report/client_action.js#L109-L119

The `data` and `context` is then stringified and added into the
reportURL:

https://github.com/odoo/odoo/blob/30fcb2e60fed17a473353b21bac4916e9ab77b10/addons/web/static/src/webclient/actions/action_service.js#L1042-L1050

But passing of the data isn't necessary in this case, and most of the
context's content is not needed since the backend is still receiving +
apply the current user's context thanks to the action_service:

https://github.com/odoo/odoo/blob/30fcb2e60fed17a473353b21bac4916e9ab77b10/addons/web/static/src/webclient/actions/action_service.js#L1079

always providing it to the backend

https://github.com/odoo/odoo/blob/30fcb2e60fed17a473353b21bac4916e9ab77b10/addons/web/controllers/report.py#L87



Therefore, to avoid an extra long report URL of all of the report's
data/context, this fix has been designed to capture only the necessary
context value and manually build the print URL accordingly.

Noticed during task: 3046178

closes odoo/odoo#119954

Signed-off-by: Steve Van Essche <svs@odoo.com>

addons/stock/static/src/components/reception_report_main/stock_reception_report_main.js

@@ -16,6 +16,8 @@ export class ReceptionReportMain extends Component {
         this.ormService = useService("orm");
         this.actionService = useService("action");
         this.reportName = "stock.report_reception";
+        const defaultDocIds = Object.entries(this.context).find(([k,v]) => k.startsWith("default_"));
+        this.contextDefaultDoc = { field: defaultDocIds[0], ids: defaultDocIds[1] };
         this.state = useState({
             sourcesToLines: {},
         });
@@ -29,7 +31,7 @@ export class ReceptionReportMain extends Component {
 
     async getReportData() {
         const args = [
-            this.context.default_picking_ids,
+            this.contextDefaultDoc.ids,
             { context: this.context, report_type: "html" },
         ];
         return this.ormService.call(
@@ -78,7 +80,7 @@ export class ReceptionReportMain extends Component {
         return this.actionService.doAction({
             type: "ir.actions.report",
             report_type: "qweb-pdf",
-            report_name: `${this.reportName}/${this.context.default_picking_ids.join(",")}`,
+            report_name: `${this.reportName}/?context={"${this.contextDefaultDoc.field}": ${JSON.stringify(this.contextDefaultDoc.ids)}}`,
             report_file: this.reportName,
         });
     }