[IMP] Rule product.state.public has no group, this is a deprecated fe…

…ature. Every access-granting rule should specify a group.

product_state/security/ir.model.access.csv

@@ -1,4 +1,4 @@
 "id","name","model_id:id","group_id:id","perm_read","perm_write","perm_create","perm_unlink"
 "access_product_state_sale_manager","product.state","model_product_state","sales_team.group_sale_manager",1,1,1,1
 "access_product_state_stock_manager","product.state","model_product_state","stock.group_stock_manager",1,1,1,1
-"access_product_state_public","product.state.public","model_product_state",,1,0,0,0
+"access_product_state_public","product.state.public","model_product_state",base.group_user,1,0,0,0