fix: Update event loop retrieval to support Python 3.14+

[Paillat-dev]

Caution

Feature freeze is active, as described by our Release Schedule.

Summary

This is a minimal fix that allows py-cord to work in python 3.14 (allegedly, seems to work though). It is not the most elegant and our entire asyncio stack should eventually be replaced to be more idomatic, but should allow us to ship 3.14 support in the current state.

See #2645 for a later, more future proof solution.

This does nto have changelog as it is an internal refactor in preparation for 3.14 - the actual changelog is in #2948

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.
• AI Usage has been disclosed.
  • If AI has been used, I understand fully what the code does

[pycord-app]

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This pull request can be checked-out with:

git fetch origin pull/3187/head:pr-3187
git checkout pr-3187

This pull request can be installed with:

pip install git+https://github.com/Pycord-Development/pycord@refs/pull/3187/head