Cannot create literal for pd.Timedelta with allow_object=False

[yiteng-guo]

Checks

• I have checked that this issue has not already been reported.
• I have confirmed this bug exists on the latest version of Polars.

Reproducible example

import polars as pl
import pandas as pd

pl.select(a=pl.lit(pd.Timedelta(minutes=1)))

TypeError: cannot create expression literal for value of type Timedelta: Timedelta('0 days 00:01:00')

Hint: Pass `allow_object=True` to accept any value and create a literal of type Object.

Log output

No response

Issue description

I believe this is the same as #18447 and something like #18497 should fix it.

Expected behavior

It should allow pd.Timedelta since it's a subclass of datetime.timedelta.

Installed versions

Can't do this since it's on the work laptop.

[henryharbeck]

Like #18447, this is a regression from 1.5.
FYI @ritchie46 @MarcoGorelli @mcrumiller

[mcrumiller]

In this case it's cause a pd.Timedelta object has a _s attribute and so our convert thinks it's a list/series.