TST: add ASV check for groupby with uint64 col
- [x] closes #28122 
- [x] tests added/passed
- [x] Ensure all linting tests pass, see [here](https://pandas.pydata.org/pandas-docs/dev/development/contributing.html#code-standards) for how to run them

The performance regression reported in the original issue was fixed somewhere between 0.25.1 and 1.2.4. This PR just adds an ASV test to monitor for the same regression in the future. 
