fix(ux): remove get item buttons from submitted production plan (#30224)

(cherry picked from commit 1af13ca4bf)

fix(patch): remove dead links to ProdPlan Item

(cherry picked from commit d3e90ed8c8)

Co-authored-by: Ankush Menat <ankush@frappe.io>

erpnext/patches/v13_0/remove_unknown_links_to_prod_plan_items.py

@@ -0,0 +1,37 @@
+import frappe
+
+
+def execute():
+	"""
+	Remove "production_plan_item" field where linked field doesn't exist in tha table.
+	"""
+	frappe.reload_doc("manufacturing", "doctype", "production_plan_item")
+
+	work_order = frappe.qb.DocType("Work Order")
+	pp_item = frappe.qb.DocType("Production Plan Item")
+
+	broken_work_orders = (
+		frappe.qb
+			.from_(work_order)
+			.left_join(pp_item).on(work_order.production_plan_item == pp_item.name)
+			.select(work_order.name)
+			.where(
+				(work_order.docstatus == 0)
+				& (work_order.production_plan_item.notnull())
+				& (work_order.production_plan_item.like("new-production-plan%"))
+				& (pp_item.name.isnull())
+			)
+	).run()
+
+	if not broken_work_orders:
+		return
+
+	broken_work_order_names = [d[0] for d in broken_work_orders]
+
+	(frappe.qb
+		.update(work_order)
+		.set(work_order.production_plan_item, None)
+		.where(work_order.name.isin(broken_work_order_names))
+	).run()
+
+