fix: Add default score of 1 to Item Group Autocompleter

- If score 0 is inserted into suggestions, RS does not consider that suggestion
diff --git a/erpnext/e_commerce/redisearch_utils.py b/erpnext/e_commerce/redisearch_utils.py
index 95b74e0..b2f97e3 100644
--- a/erpnext/e_commerce/redisearch_utils.py
+++ b/erpnext/e_commerce/redisearch_utils.py
@@ -209,7 +209,7 @@
 		autocompleter.add_suggestions(
 			Suggestion(
 				string=item_group.name,
-				score=item_group.weightage,
+				score=frappe.utils.flt(item_group.weightage) or 1.0,
 				payload=payload,  # additional info that can be retrieved later
 			)
 		)