fix: 🐛 Fix Interaction.channel incorrectly set

[Paillat-dev]

Summary

InteractionPayload["channel"] is partial, thus, when creating a GuildChannel object from it, some attributes were missing/incorrectly set. With this pr, InteractionPayload["channel"] is used only in the following cases:

1. When the interaction happens in private channels.
2. When the channel is missing from the bot's cache.

In all other cases, it uses the full channel object from the cache.

Information

• This PR fixes an issue.
  fixes: permissions_for returning wrong permissions #2281
• 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.

[NeloBlivion]

Removing cached_channel makes this a breaking change; at most, it should be deprecated.

[Paillat-dev]

Ok

[JustaSqu1d]

please fix changelog entry