perf: Duplicate queries for UOM (#35744)

This query repeats for every item, UOMs rarely if ever change

(cherry picked from commit 29da1db)

erpnext/stock/doctype/pick_list/pick_list.py

@@ -36,7 +36,7 @@ def before_save(self):
 		for location in self.get("locations"):
 			if (
 				location.sales_order
-				and frappe.db.get_value("Sales Order", location.sales_order, "per_picked") == 100
+				and frappe.db.get_value("Sales Order", location.sales_order, "per_picked", cache=True) == 100
 			):
 				frappe.throw(
 					_("Row #{}: item {} has been picked already.").format(location.idx, location.item_code)
@@ -474,7 +474,7 @@ def get_items_with_location_and_quantity(item_doc, item_location_map, docstatus)
 		)
 		qty = stock_qty / (item_doc.conversion_factor or 1)
 
-		uom_must_be_whole_number = frappe.db.get_value("UOM", item_doc.uom, "must_be_whole_number")
+		uom_must_be_whole_number = frappe.get_cached_value("UOM", item_doc.uom, "must_be_whole_number")
 		if uom_must_be_whole_number:
 			qty = floor(qty)
 			stock_qty = qty * item_doc.conversion_factor