Fix issue #63444, sorry first time if I did something wrong

[dattpatel123]

Before when you pass an empty series into the pd.Series.round() it would raise a type error because an empty series is an object type. Now it doesn’t raise that error. It will raise that error only when an object or string type is passed. It now checks if it the series is a true string or object before raising error. I also added some new test cases to make sure the fix doesn’t mess up the function and that it handles empty series. Might have made mistakes as it’s my first time contributing!

• closes BUG: Rounding of an empty Series should return empty Series #63444 (Replace xxxx with the GitHub issue number)
• Tests added and passed if fixing a bug or adding a new feature
• All code checks passed.
• Added type annotations to new arguments/methods/functions.
• Added an entry in the latest doc/source/whatsnew/v3.0.0.rst file if fixing a bug or adding a new feature.
• If I used AI to develop this pull request, I prompted it to follow AGENTS.md.

[sanchit122006]

Are you providing unreviewed code of ai, you don't provide any info in description about your code change

[sanchit122006]

@dattpatel123 why you add slashes in reference checks add cross mark on closes columns or another's if you tested the code.

[sanchit122006]

@dattpatel123 Replace this "doc/source/whatsnew/v3.0.rst" as you changed this file, untick all code checks passed as you have 1 failing check why are you so dumb 🙂

[sanchit122006]

I think you have lots of mistakes in your code please review the code first, otherwise we have to give you ai slop label !!