Onboarding Audit Log event type 165 ONBOARDING_PROMPT_DELETE never logged

[DEVTomatoCake]

Description

Recently, the Audit Log event types for Guild Onboarding were documented in #6041. This also includes the ONBOARDING_PROMPT_DELETE Audit Log type.

However, it is seemingly never logged. It isn't returned in the /guilds/:id/audit-logs API response (and therefore not displayed in the client), nor emitted when listening to the Guild Audit Log Entry Create gateway event.

Steps to Reproduce

1. Create a guild onboarding prompt
2. Save it by switching the page
3. Switch back and delete it
4. Check the Audit Log API endpoint or the Audit Log tab

Expected Behavior

An Audit Log entry would be created and a gateway event emitted.

Current Behavior

Nothing is logged, except for the general Audit Log type 167/ONBOARDING_UPDATE.

Screenshots/Videos

No response

Client and System Information

canary 296435 (6057b13)
discord.js@dev