fix: 🐛 Primary guild update not firing on_user_update

[ToothyDev]

Summary

Previously, an update to a user's primary guild would not fire the on_user_update event. This is now the case. The underlying dict for users was also updated with the missing primary_guild key

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.

[pycord-app]

Thanks for opening this pull request!
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This pull request can be checked-out with:

git fetch origin pull/3077/head:pr-3077
git checkout pr-3077

This pull request can be installed with:

pip install git+https://github.com/Pycord-Development/pycord@refs/pull/3077/head

[Lulalaby]

That should work for now

[Paillat-dev]

after.primary_guild is not a PrimaryGuild object in my testing but rather just a dictionary

[Paillat-dev]

Getting the event twice:

User Update Event:
  User: 'paillat' (ID: 707196665668436019)
  Primary Guild Before: <PrimaryGuild identity_guild_id=1317206872763404478 identity_enabled=True tag=CAP>
  Primary Guild After:  None
User Update Event:
  User: 'paillat' (ID: 707196665668436019)
  Primary Guild Before: <PrimaryGuild identity_guild_id=1317206872763404478 identity_enabled=True tag=CAP>
  Primary Guild After:  None

[Paillat-dev]

Tested, works. Mostly nitpick.

[Paillat-dev]

lgtm; tested; nice pr :)

.

[Paillat-dev]

lgtm; tested; nice pr, thank you !

[Lulalaby]

W