BUG: Int64 index_col raises AttributeError: 'BooleanArray' object has no attribute 'sum'

[5j9]

• I have checked that this issue has not already been reported.

• I have confirmed this bug exists on the latest version of pandas.

• I have confirmed this bug exists on the master branch of pandas.

Reproducible Example

from pandas import read_csv
from io import StringIO
df = read_csv(
    StringIO('1,2,3;4,5,6;7,8,9'), 
    lineterminator=';', names=('1', '2', '3'),
    dtype='Int64', index_col=('1', '2'))
print(df)

Issue Description

See the provided example. here is the traceback:

Traceback (most recent call last):
  File "C:\Users\a\AppData\Roaming\JetBrains\PyCharmCE2021.3\scratches\scratch_3.py", line 3, in <module>
    df = read_csv(
  File "C:\Users\a\AppData\Local\Programs\Python\Python310\lib\site-packages\pandas\util\_decorators.py", line 311, in wrapper
    return func(*args, **kwargs)
  File "C:\Users\a\AppData\Local\Programs\Python\Python310\lib\site-packages\pandas\io\parsers\readers.py", line 586, in read_csv
    return _read(filepath_or_buffer, kwds)
  File "C:\Users\a\AppData\Local\Programs\Python\Python310\lib\site-packages\pandas\io\parsers\readers.py", line 488, in _read
    return parser.read(nrows)
  File "C:\Users\a\AppData\Local\Programs\Python\Python310\lib\site-packages\pandas\io\parsers\readers.py", line 1047, in read
    index, columns, col_dict = self._engine.read(nrows)
  File "C:\Users\a\AppData\Local\Programs\Python\Python310\lib\site-packages\pandas\io\parsers\c_parser_wrapper.py", line 309, in read
    index, names = self._make_index(data, alldata, names)
  File "C:\Users\a\AppData\Local\Programs\Python\Python310\lib\site-packages\pandas\io\parsers\base_parser.py", line 416, in _make_index
    index = self._agg_index(index)
  File "C:\Users\a\AppData\Local\Programs\Python\Python310\lib\site-packages\pandas\io\parsers\base_parser.py", line 512, in _agg_index
    arr, _ = self._infer_types(arr, col_na_values | col_na_fvalues)
  File "C:\Users\a\AppData\Local\Programs\Python\Python310\lib\site-packages\pandas\io\parsers\base_parser.py", line 695, in _infer_types
    na_count = mask.sum()
AttributeError: 'BooleanArray' object has no attribute 'sum'

Process finished with exit code 1

Replace Int64 with int64 and it will work.

Expected Behavior

I expected Int64 to work just like int64; or maybe the error message can be more helpful?

Installed Versions

INSTALLED VERSIONS

commit : 73c6825
python : 3.10.1.final.0
python-bits : 64
OS : Windows
OS-release : 10
Version : 10.0.19043
machine : AMD64
processor : Intel64 Family 6 Model 94 Stepping 3, GenuineIntel
byteorder : little
LC_ALL : None
LANG : None
LOCALE : English_United States.1252
pandas : 1.3.3
numpy : 1.21.2
pytz : 2021.3
dateutil : 2.8.2
pip : 21.3.1
setuptools : 58.1.0
Cython : 0.29.24
pytest : 6.2.5
hypothesis : None
sphinx : None
blosc : None
feather : None
xlsxwriter : 3.0.2
lxml.etree : 4.6.3
html5lib : 1.1
pymysql : None
psycopg2 : None
jinja2 : 3.0.3
IPython : 7.29.0
pandas_datareader: None
bs4 : 4.10.0
bottleneck : None
fsspec : None
fastparquet : None
gcsfs : None
matplotlib : 3.5.0
numexpr : None
odfpy : None
openpyxl : 3.0.9
pandas_gbq : None
pyarrow : None
pyxlsb : None
s3fs : None
scipy : None
sqlalchemy : None
tables : None
tabulate : None
xarray : None
xlrd : None
xlwt : None
numba : None

[jreback]

try on master pls

[phofl]

Duplicate of #44079 and works on master