Fix various TypeDicts for Unpack

[Soheab]

Summary

• discord.Client

  • max_messages, proxy, proxy_auth, shard_id, shard_count, status, activity, allowed_mentions, max_ratelimit_timeout, and connector can be None

• commands.Bot

  • owner_id and owner_ids can be None

• commands.Cog

  • Remove the Unpack + CogKwargs

• commands.Command

  • help, brief, and usage can be None
  • aliases can be a tuple too

• commands.HelpCommand

  • verify_checks and dm_help can be None

• commands.HybridGroup

  • Added missing case_insensitive kwarg
  • Fixed type of fallback being Union[str, app_commands.locale_str] instead of Optional[str]
  • Added missing fallback_locale kwarg with a type of Optional[app_commands.locale_str]

Checklist

• If code changes were made then they have been tested.
  • I have updated the documentation to reflect the changes.
• 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, ...)

[Rapptz]

My gut feeling says to remove the Unpack usage from CogMeta in general but I don't know.

[Soheab]

My gut feeling says to remove the Unpack usage from CogMeta in general but I don't know.

It has been removed.