fix(gateway; voice/reader): SyntaxWarning about return in a finally block

[vmphase]

Summary

This PR fixes #3332:
SyntaxWarning: 'return' in a 'finally' block (introduced in Python 3.14) in two places (ruff B012)

Information

• This PR fixes an issue.
• This PR adds something new (e.g. new method or parameters).
• This PR is a breaking change (e.g. methods or parameters removed/renamed).
• This PR is not a code change (e.g. documentation, README, typehinting,
  examples, ...).

Checklist

• I have searched the open pull requests for duplicates.
• If code changes were made then they have been tested.
  • I have updated the documentation to reflect the changes.
• If type: ignore comments were used, a comment is also left explaining why.
• I have updated the changelog to include these changes.
• I have read the Contributing Guidelines.
• AI Usage has been disclosed.
  • If AI has been used, I understand fully what the code does

[pycord-app]

Thanks for opening this pull request!
Please make sure you have read the Contributing Guidelines and Code of Conduct.

This pull request can be checked-out with:

git fetch origin pull/3334/head:pr-3334
git checkout pr-3334

This pull request can be installed with:

pip install git+https://github.com/Pycord-Development/pycord@refs/pull/3334/head

[vmphase]

For anyone interested why Exception was changed to BaseException: previously, a non-Exception failure from f.result() (e.g. SystemExit) wasn't caught here, so it fell into finally, where the return silently discarded it. Now it's explicitly caught and logged instead with same end result.

[Paillat-dev]

Reviewed from here:

Lgtm please someone test but should be good it works in my brain

[vmphase]

Reviewed from here:

Lgtm please someone test but should be good it works in my brain

Wow. The most insane review place I've ever seen. Astonishing!