fix: do not empty viewers parent on form refresh (backport #12905) (#12908)

(cherry picked from commit 6ecbf55de5)

Co-authored-by: prssanna <prssud@gmail.com>

frappe/public/js/frappe/form/form.js

@@ -360,6 +360,7 @@ frappe.ui.form.Form = class FrappeForm {
 			grid_obj.grid.grid_pagination.go_to_page(1, true);
 		});
 		frappe.ui.form.close_grid_form();
+		this.viewers && this.viewers.parent.empty();
 		this.docname = docname;
 		this.setup_docinfo_change_listener();
 	}

frappe/public/js/frappe/form/toolbar.js

@@ -211,7 +211,6 @@ frappe.ui.form.Toolbar = class Toolbar {
 
 	make_viewers() {
 		if (this.frm.viewers) {
-			this.frm.viewers.parent.empty();
 			return;
 		}
 		this.frm.viewers = new frappe.ui.form.FormViewers({