Add patch to set update_field and update_value (#14421)

* Add patch to set update_field and update_value

- set update_field and update_value if empty
since expense claim workflow is dependent on it.

* Set update_field for workflow state of leave application

* Update patch entry

* Fix bug

* Update set_update_field_and_value_in_workflow_state.py
diff --git a/erpnext/patches.txt b/erpnext/patches.txt
index 8e9de96..8e0aa74 100644
--- a/erpnext/patches.txt
+++ b/erpnext/patches.txt
@@ -546,3 +546,4 @@
 erpnext.patches.v10_0.update_status_in_purchase_receipt
 erpnext.patches.v11_0.inter_state_field_for_gst
 erpnext.patches.v11_0.rename_members_with_naming_series #04-06-2018
+erpnext.patches.v11_0.set_update_field_and_value_in_workflow_state
\ No newline at end of file