GuildChannel#is_text_based returns true for thread channel

[m1sk9]

Make GuildChannel#is_text_based return true for public and private threads.

ref: https://canary.discord.com/channels/381880193251409931/673965002805477386/1305494065613111366 (Serenity Discord)

[m1sk9]

Forgot cargo fmt. I have made a correction and need CI approval again.

[GnomedDev]

Can a comment be added to the end of ChannelType along the lines of "Make sure to update GuildChannel::is_text_based" to make sure this stays up to date in future?

[m1sk9]

Can a comment be added to the end of ChannelType along the lines of "Make sure to update GuildChannel::is_text_based" to make sure this stays up to date in future?

Added 238c323

[jamesbt365]

I'm not sure she meant a doc comment, this is something that only really needs to be updated when the developer changes it, it doesn't need to be visible to the user.

[m1sk9]

Okay, you're right. Fixed with an abb4d08.