[Fix] Slash commands in bot DMChannel

[l-404-l]

Summary

Fixes and issue where you're unable to get slash commands via a bots DMChannel.

General Info

• [x] If code changes were made then they have been tested.
  • [ ] I have updated the documentation to reflect the changes.
• [ ] This PR fixes an issue (please put issue # in summary).
• [ ] 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, ...)

[l-404-l]

Updates: Adds natural client behavior. Fixes Message Commands.

[dolfies]

Thanks for the PR. For starters, this contains a lot of unnecessary formatting/docstring changes that are out of scope and conflict with the project's linting standards.

As for the change, Discord has updated how command retrieval works across the entire platform, not just DMs, so this isn't the right way to fix this, sorry.