addAttempt workaround

[quanganhdo]

Task/Issue URL: https://app.asana.com/0/1205591970852438/1208761697124514/f
Tech Design URL:
CC:

Description:

Workaround to deal with OptOutAttemptDB having one-to-one relationship with ExtractedProfileDB.

The idea is to let subsequent attempts overwrite the previous one. Associated pixels should've already been fired, so no data loss. This would allow the opt-out operation to finish cleanly, add the right history events, and fire the correct pixels.

Steps to test this PR:

This is quite time consuming to verify. You may use this branch for sped up process: https://github.com/duckduckgo/macos-browser/tree/anh/pir/resubmit-opt-outs-pr-review

1. Go through the DBP flow
2. Move the system time forward so that DBP does another scan/opt-out passes
3. As opt-out retries are done, you should see attemptCount being incremented in the DB browser

Definition of Done:

• Does this PR satisfy our Definition of Done?

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Internal references:

Pull Request Review Checklist
Software Engineering Expectations
Technical Design Template
Pull Request Documentation

[aataraxiaa]

Tested as follows:

• Ran an initial scan
• Set system time a week forward
• Waited
• Checked DB Browser and saw some rows with attemptCount of 1

From the instructions I believe this matches expectations. See screenshot.