Move test_dtypes so it runs later (#82169)
The error messages it gives are very unhelpful (because a failure
gets translated into "dtype was not supported" rather than the
actual backtrace), so I'd rather get error messages about this after
I've tested basic functionality.
Signed-off-by: Edward Z. Yang <ezyang@fb.com>
Pull Request resolved: https://github.com/pytorch/pytorch/pull/82169
Approved by: https://github.com/zou3519, https://github.com/Chillee