fix: get workflow_state_fieldname instead of setting workflow_state t…

…o none

(cherry picked from commit ee9cb43)

frappe/core/doctype/deleted_document/deleted_document.py

@@ -10,6 +10,7 @@
 from frappe import _
 from frappe.desk.doctype.bulk_update.bulk_update import show_progress
 from frappe.model.document import Document
+from frappe.model.workflow import get_workflow_name
 
 
 class DeletedDocument(Document):
@@ -30,8 +31,11 @@ def restore(name, alert=True):
 	except frappe.DocstatusTransitionError:
 		frappe.msgprint(_("Cancelled Document restored as Draft"))
 		doc.docstatus = 0
-		if doc.workflow_state:
-			doc.workflow_state = None
+		active_workflow = get_workflow_name(doc.doctype)
+		if active_workflow:
+			workflow_state_fieldname = frappe.get_value("Workflow", active_workflow, "workflow_state_field")
+			if doc.get(workflow_state_fieldname):
+				doc.set(workflow_state_fieldname, None)
 		doc.insert()
 
 	doc.add_comment("Edit", _("restored {0} as {1}").format(deleted.deleted_name, doc.name))