Bug: Fix inconsistent behavior in searchsorted (#49620)

Raise error when DataFrame is passed to searchsorted

Author: yqyqyq-W

pandas/core/base.py

@@ -20,7 +20,6 @@
 
 import numpy as np
 
-import pandas as pd
 from pandas._libs import lib
 from pandas._typing import (
     Axis,
@@ -56,6 +55,7 @@
     remove_na_arraylike,
 )
 
+import pandas as pd
 from pandas.core import (
     algorithms,
     nanops,