handle name='[[None]' in Index constructor

Author: arw2019

pandas/core/indexes/base.py

@@ -387,6 +387,11 @@ def __new__(
                     )
             # other iterable of some kind
             subarr = com.asarray_tuplesafe(data, dtype=object)
+
+            if isinstance(name, list) and len(name) == 1:
+                # GH 36655: if name == [List[str]] we want List[str]
+                name = name[0]
+
             return Index(subarr, dtype=dtype, copy=copy, name=name, **kwargs)
 
     """