Guild Ban w/ delete_message_seconds should delete Interaction messages too

[cakedan]

Currently, users can spam/raid servers using External or Internal Applications by abusing slash commands since bot-generated content is not pruned when the user is banned.

When a server allows External Apps, a raider can use a slash command that outputs multiple follow-up messages with obscene content, then deletes the original command message. This makes it very difficult to identify the executor. Banning the External App from the server also does not clear its messages.

Raiders can also abuse Internal Apps by spamming the largest slash command a bot offers across multiple channels, flooding them with output.

In both cases, banning the user leaves all bot-generated interaction messages behind, forcing moderators to manually hunt through every channel and delete them one by one.

Closing this loophole would significantly reduce the risk of enabling Allow External Applications, which currently exposes servers to raids with no efficient cleanup path.

TLDR: Prune interaction messages, follow ups included, when banning users with delete_message_seconds.

[RiskyMH]

If the bot is used via user installed app context it is deleted*. If the bot is also installed via server it isn't (right now that i know of).
* so basically if user can manually delete it via context menu, this will delete it right now.
_{(note I'm not discord staff and just have made this observation}