fix for pandas-dev#60695 fix Series constructor dropping key levels when keys have varying entry counts

Author: mansoor17syed

pandas/core/indexes/multi.py

@@ -6,6 +6,7 @@
     Generator,
     Hashable,
     Iterable,
+    Mapping,
     Sequence,
     List,
 )
@@ -17,6 +18,7 @@
     Literal,
     cast,
     ArrayLike,
+    overload,
 )
 import warnings
 
@@ -29,7 +31,7 @@
     index as libindex,
     lib,
 )
-from pandas._libs.hashtable import duplicated
+from pandas._libs.hashtable import duplicated, duplicated_int64
 from pandas._typing import (
     AnyAll,
     AnyArrayLike,