♻️ enhance _Call11bool

[guan404ming]

No description provided.

[guan404ming]

After investigation, I think isnat and signbit are not suitable to add fallback to return Any

>>> date1 = np.datetime64('2023-10-15')
>>> np.signbit(date1)
Traceback (most recent call last):
  File "<python-input-5>", line 1, in <module>
    np.signbit(date1)
    ~~~~~~~~~~^^^^^^^
TypeError: ufunc 'signbit' not supported for the input types, and the inputs could not be safely coerced to any supported types according to the casting rule ''safe''

>>> np.isnat(123)
Traceback (most recent call last):
  File "<python-input-1>", line 1, in <module>
    np.isnat(123)
    ~~~~~~~~^^^^^
TypeError: ufunc 'isnat' is only defined for np.datetime64 and np.timedelta64.

Thus, I just converted this PR only for enhancing _Call11bool