Add status comments.

Author: ay0503

mypy/checkexpr.py

@@ -5051,17 +5051,18 @@ def check_lst_expr(self, e: ListExpr | SetExpr | TupleExpr, fullname: str, tag:
         if t:
             return t
 
-        # if a ListExpr, just infer the item type directly
+        # try to infer directly
         if isinstance(e, ListExpr):
             item_types = [self.accept(item) for item in e.items]
             if not item_types:
-                # empty list, default to Any
                 item_type = AnyType(TypeOfAny.from_empty_collection)
             else:
-                # attempt to find a common supertype
+                # use all the element types
                 item_type = self.infer_item_type(item_types)
             return self.chk.named_generic_type(fullname, [item_type])
 
+        #!BUG this forces all list exprs to be forced (we don't want that)
+
         # Translate into type checking a generic function call.
         # Used for list and set expressions, as well as for tuples
         # containing star expressions that don't refer to a