WordCamp Speaker badges should have the date of their published post, not when they were added.

[dd32]

Describe the bug

When a WordCamp speaker doesn't have their WordPress.org username added to their Speaker post, the badge automation doesn't run.

When the user comes looking for the badge months later, the date that appears in their profile activity log shows the current time, rather than either a) When the WordCamp was, or b) When the speaker post was published.

This isn't an issue when the badge is added close to the event, but can be 'weird' when we're adding a badge for a WordCamp that happened last year.

To reproduce

Steps to reproduce the behavior:

1. Edit a WordCamp Speaker profile for a past camp, add the WordPress.org username
2. View the WordPress.org profile, note that the activity log is today.

Expected behavior

Unsure; This is a situation where I feel that it should have a date in the past, rather than the current timestamp.

Having it in the activity log as Confirmed as a speaker.. today though is weird.

Screenshots / Screencasts