BUG: Compare names with None in DataFrame ctor
Closes https://github.com/pandas-dev/pandas/issues/16114
# [Codecov](https://codecov.io/gh/pandas-dev/pandas/pull/16117?src=pr&el=h1) Report
> Merging [#16117](https://codecov.io/gh/pandas-dev/pandas/pull/16117?src=pr&el=desc) into [master](https://codecov.io/gh/pandas-dev/pandas/commit/844013b20c2a6230b1baeec1d5442e26b7930656?src=pr&el=desc) will **decrease** coverage by `<.01%`.
> The diff coverage is `100%`.

[![Impacted file tree graph](https://codecov.io/gh/pandas-dev/pandas/pull/16117/graphs/tree.svg?src=pr&token=eZ4WkYLtcO&height=150&width=650)](https://codecov.io/gh/pandas-dev/pandas/pull/16117?src=pr&el=tree)

```diff
@@            Coverage Diff             @@
##           master   #16117      +/-   ##
==========================================
- Coverage   90.84%   90.83%   -0.01%     
==========================================
  Files         159      159              
  Lines       50771    50771              
==========================================
- Hits        46122    46120       -2     
- Misses       4649     4651       +2
```

| Flag | Coverage Δ | |
|---|---|---|
| #multiple | `88.61% <100%> (-0.01%)` | :arrow_down: |
| #single | `40.34% <100%> (ø)` | :arrow_up: |

| [Impacted Files](https://codecov.io/gh/pandas-dev/pandas/pull/16117?src=pr&el=tree) | Coverage Δ | |
|---|---|---|
| [pandas/core/frame.py](https://codecov.io/gh/pandas-dev/pandas/pull/16117?src=pr&el=tree#diff-cGFuZGFzL2NvcmUvZnJhbWUucHk=) | `97.59% <100%> (-0.05%)` | :arrow_down: |
| [pandas/core/common.py](https://codecov.io/gh/pandas-dev/pandas/pull/16117?src=pr&el=tree#diff-cGFuZGFzL2NvcmUvY29tbW9uLnB5) | `90.68% <0%> (-0.35%)` | :arrow_down: |

------

[Continue to review full report at Codecov](https://codecov.io/gh/pandas-dev/pandas/pull/16117?src=pr&el=continue).
> **Legend** - [Click here to learn more](https://docs.codecov.io/docs/codecov-delta)
> `Δ = absolute <relative> (impact)`, `ø = not affected`, `? = missing data`
> Powered by [Codecov](https://codecov.io/gh/pandas-dev/pandas/pull/16117?src=pr&el=footer). Last update [844013b...7f7a32e](https://codecov.io/gh/pandas-dev/pandas/pull/16117?src=pr&el=lastupdated). Read the [comment docs](https://docs.codecov.io/docs/pull-request-comments).
 aside from the whatsnew lgtm. thanks!