circulation: fix patron info in loan view

* Fixes patron info in loan view: it couldn't be removed in order to go
to checkin view (displayPatronMode is setted to false in checkin view
and not updated when going to loan view).

Co-Authored-by: Alicia Zangger <alicia.zangger@rero.ch>

projects/admin/src/app/circulation/patron/loan/loan.component.ts

@@ -80,6 +80,7 @@ export class LoanComponent implements OnInit {
       this.patron = patron;
       if (patron) {
         this.isLoading = true;
+        this.patron.displayPatronMode = true;
         this._patronService.getItems(patron.pid).subscribe(items => {
           this.checkedOutItems = items;
           this.isLoading = false;