BUG: DataFrame([empty EA Series]) returns NAs with dtype object

[mroeschke]

Pandas version checks

• 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 main branch of pandas.

Reproducible Example

In [23]: df = pd.DataFrame([pd.Series([], dtype="Int64")], columns=[1, 2, 3])

In [24]: df
Out[24]: 
      1     2     3
0  <NA>  <NA>  <NA>

In [25]: df.dtypes
Out[25]: 
1    object
2    object
3    object
dtype: object

Issue Description

Given that the correct NA value was picked up here, I imagine it could be possible to return Int64 types here instead of object

Expected Behavior

Returning Int64 types instead of object

Installed Versions

Replace this line with the output of pd.show_versions()

[jbrockmendel]

xref #49593

[phofl]

I am getting

    1   2   3
0 NaN NaN NaN


1    float64
2    float64
3    float64
dtype: object

on main