TST/CLN: Fixturize tests/frame/test_block_internals.py
- [ ] Following h-vetinari's footstep (#22471 ), "translate" one of the test file
- [ ] tests added / passed

Hello @makbigc! Thanks for submitting the PR.

 - There are no PEP8 issues in the file [`pandas/tests/frame/test_block_internals.py`](https://github.com/makbigc/pandas/blob/720e8aa78f881b776b57a5b9f4b83397f74631f5/pandas/tests/frame/test_block_internals.py) !

 can you rebase and ping on green. # [Codecov](https://codecov.io/gh/pandas-dev/pandas/pull/22926?src=pr&el=h1) Report
> Merging [#22926](https://codecov.io/gh/pandas-dev/pandas/pull/22926?src=pr&el=desc) into [master](https://codecov.io/gh/pandas-dev/pandas/commit/56d8e789155231b04131c6bf4674971ec3f38f95?src=pr&el=desc) will **not change** coverage.
> The diff coverage is `n/a`.

[![Impacted file tree graph](https://codecov.io/gh/pandas-dev/pandas/pull/22926/graphs/tree.svg?width=650&token=eZ4WkYLtcO&height=150&src=pr)](https://codecov.io/gh/pandas-dev/pandas/pull/22926?src=pr&el=tree)

```diff
@@           Coverage Diff           @@
##           master   #22926   +/-   ##
=======================================
  Coverage   92.13%   92.13%           
=======================================
  Files         170      170           
  Lines       51073    51073           
=======================================
  Hits        47056    47056           
  Misses       4017     4017
```

| Flag | Coverage Δ | |
|---|---|---|
| #multiple | `90.56% <ø> (ø)` | :arrow_up: |
| #single | `42.28% <ø> (ø)` | :arrow_up: |


------

[Continue to review full report at Codecov](https://codecov.io/gh/pandas-dev/pandas/pull/22926?src=pr&el=continue).
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> `Δ = absolute <relative> (impact)`, `ø = not affected`, `? = missing data`
> Powered by [Codecov](https://codecov.io/gh/pandas-dev/pandas/pull/22926?src=pr&el=footer). Last update [56d8e78...3a3b107](https://codecov.io/gh/pandas-dev/pandas/pull/22926?src=pr&el=lastupdated). Read the [comment docs](https://docs.codecov.io/docs/pull-request-comments).
 @jreback Thanks for your review. Rebased. thanks @makbigc keep em coming!