T402460 added instrumentation that enables us to track pastes during edit sessions that **would** have caused Paste Check to activate were it available.
This task involves the work of introducing a new event that would enable us to track Pastes that would **not** have caused Paste Check to activate, given how it is currently configured.
=== Story
As a data scientist and member of the Editing Team, I want to be able to track pastes that would have caused Paste Check had the text not been copied from a known source so that we can, among other things, understand how many edits Paste Check is being suppressed from showing witin.
=== Requirements
Building on the current `relevant-paste` event, we can also instrument when a paste is detected and check whether it's a paste that's (a) long enough to be shown as a paste check, and (b) would not have been shown as a paste check //because// it has a known-source.
We can log it as `ignored-paste-[source]`, where `source` is currently one of googleDocs, libreOffice, microsoftOffice, plainText, and visualEditor.
As with the `relevant-paste` event, this would happen for all users, not just those on an a/b test wiki. The practical difference would be that since it's logging when paste check //doesn't// show, it'll also be appearing for a/b test wiki users who're in the test group (who don't get `relevant-paste` because they emit the normal `check-shown` event instead).
=== Done
- [X] Requirements drafted
- [ ] @MNeisler approves
- [ ] Requirements implemented
- [ ] Editing QA verifies event being emitted client-side
- [ ] @MNeisler verifies event being logged in DB