BUG: SparseArray.map allows the fill value to be included in the sparse values

[topper-123]

Pandas version checks

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• 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

>>> import pandas as pd
>>> sp = pd.arrays.SparseArray([1, np.nan])
>>> mapped = sp.map(lambda x: np.nan)
>>> pd.isna(mapped.fill_value)
True
>>> pd.isna(mapped.sp_values)[0]
True

Issue Description

The current implementation of SparseArray.map allows the fill value to be included in the sparse values, causing potential problems.

Expected Behavior

SparseArray.map It should raise or recalculate the sparse array.

Installed Versions

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