Arjan Singh 32a803c31e feat(historyV2): reconcile completed workflows (#6340) ...

## Summary

Running + Finished + History tasks now all work and reconcile correctly
in the queue.

## Changes

1. Reconcile complete workflows so they show up in history.
2. Do the above in a way that minimizes recreation of `TaskItemImpls`
3. Address some CR feedback on #6336 

## Review Focus

I tried to optimize `TaskItemImpls` so we aren't recreating ones for
history items tat already exist. Please give me feedback on if I did
this correctly, or if it was even necessary.

## Screenshots 🎃 



https://github.com/user-attachments/assets/afc08f31-cc09-4082-8e9d-cee977bc1e22

┆Issue is synchronized with this [Notion
page](https://www.notion.so/PR-6340-feat-historyV2-reconcile-completed-workflows-29a6d73d36508145a56aeb99cfa0e6ba)
by [Unito](https://www.unito.io)

2025-10-28 17:40:55 -07:00

..

historyFixtures.ts

feat(historyV2): create sythetic queue priority (#6336)

2025-10-27 23:08:33 +00:00

historySortingFixtures.ts

feat(historyV2): reconcile completed workflows (#6340)

2025-10-28 17:40:55 -07:00