Fix BUG: overflow on pd.Timedelta(nanoseconds=) constructor
Add regression test

- [x] closes #32402
- [x] tests added / passed
- [x] passes `black pandas`
- [x] passes `git diff upstream/master -u -- "*.py" | flake8 --diff`
- [x] whatsnew entry

@jreback care to take a look? thanks @roberthdevries very nice