[BUG] Make __iter__ a fast-slow attribute of the pd.Series proxy type

[Matt711]

Description

Closes #17165. This PR makes __iter__ a fast-slow attribute of pd.Series by removing the the custom iterator function we were using.

Checklist

• I am familiar with the Contributing Guidelines.
• New or existing tests cover these changes.
• The documentation is up to date with these changes.

[vyasr]

I'd like to hear from @galipremsagar on #14481 before we move forward here.

[galipremsagar]

I'd like to hear from @galipremsagar on #14481 before we move forward here.

After investigating the issue I came up with a fix that properly wraps custom iterator results here: #17251

I have explained why we still have a need for custom_iter in the PR description.

[Matt711]

I'd like to hear from @galipremsagar on #14481 before we move forward here.

After investigating the issue I came up with a fix that properly wraps custom iterator results here: #17251

I have explained why we still have a need for custom_iter in the PR description.

Thanks! I'll go ahead and close this PR.