BUG: NaT instead of error for timestamp concat with None
- [x] closes #52093
- [ ] [Tests added and passed](https://pandas.pydata.org/pandas-docs/dev/development/contributing_codebase.html#writing-tests) if fixing a bug or adding a new feature
- [x] All [code checks passed](https://pandas.pydata.org/pandas-docs/dev/development/contributing_codebase.html#pre-commit).
- [ ] Added [type annotations](https://pandas.pydata.org/pandas-docs/dev/development/contributing_codebase.html#type-hints) to new arguments/methods/functions.
- [x] Added an entry in the latest `doc/source/whatsnew/vX.X.X.rst` file if fixing a bug or adding a new feature.


~~I missed adding an entry in the `whatsnew` file. So will add that,~~ any other suggestions?

Thanks! Hi,
Any suggestions or changes from my side? One check is failing. Is there anything that I'm skipping? This pull request is stale because it has been open for thirty days with no activity. Please [update](https://pandas.pydata.org/pandas-docs/stable/development/contributing.html#updating-your-pull-request) and respond to this comment if you're still interested in working on this. > One check is failing. Is there anything that I'm skipping?

I think unrelated.  can you merge main and see if that does it I'm running into issues related to #52093 - it seems like this PR has stalled, and should fix the issue we're hitting.
@jbrockmendel is there anything else needed for this PR, or can this be merged? can you merge main and ill take another look Thanks for the pull request, but it appears to have gone stale. If interested in continuing, please merge in the main branch, address any review comments and/or failing tests, and we can reopen.