[#19431] Regression in make_block_same_class (tests failing for new fastparquet release)
- [x] closes https://github.com/pandas-dev/pandas/issues/19431
- [x] tests added / passed
- [x] passes `git diff upstream/master -u -- "*.py" | flake8 --diff`
- [x] whatsnew entry

`dtype` seems still in use at:
https://github.com/minggli/pandas/blob/2f4fc0790a5e5c51eb80bbfadf4c80f0bb424c56/pandas/core/internals.py#L2911