fix: pick list not picked qty less than 1

(cherry picked from commit 1a9ae33110)

erpnext/stock/doctype/pick_list/pick_list.py

@@ -778,7 +778,7 @@ def get_available_item_locations(
 
 	if picked_item_details:
 		for location in list(locations):
-			if location["qty"] < 1:
+			if location["qty"] < 0:
 				locations.remove(location)
 
 		total_qty_available = sum(location.get("qty") for location in locations)