Accept Expr in pl.any()

[stevenlis]

Description

It appears that the function pl.any() does not accept expressions like pl.any_horizontal.

import polars as pl
pl.DataFrame(
    {'a': ['1', '1', '2', '2'],
     'b': [False, True, False, False]}
).with_columns(
    pl.when(pl.any(pl.col('b')).over('a'))
    .then(1).otherwise(0)
)

The code above will return: ValueError: could not convert value 'Unknown' as a Literal and you have to use pl.any('b')

If this is intentional, maybe the error message should be "only expect string" (#11060)

#11497

[stinodego]

This WAS intentional but now that we have split out the horizontal functionality we can accept expressions here. I was planning to add it but didn't get to it yet.