Refine: allow Any/Unbound types in dict unpacking to avoid false positives

Author: Vikash-Kumar-23

mypy/checkexpr.py

@@ -5434,7 +5434,10 @@ def visit_dict_expr(self, e: DictExpr) -> Type:
             if key is None:
                 # This is a **expr unpacking. Check that the expression has string keys.
                 value_type = get_proper_type(self.accept(value))
-                if not self.is_valid_keyword_var_arg(value_type):
+ # NEW: Allow Any or Unbound types to reduce false positives in external libraries
+                if isinstance(value_type, (AnyType, UnboundType)):
+                    pass
+                elif not self.is_valid_keyword_var_arg(value_type):
                     is_mapping = is_subtype(
                         value_type, self.chk.named_type("_typeshed.SupportsKeysAndGetItem")
                     )