ashmrtn ea2d9ceceb
Report errors when building details (#2206)
## Description

Report an error if an item in details that was sourced from a base snapshot doesn't have a previous path. Items that don't have a previous path cannot be sourced from a base snapshot's backup details meaning the item will be stored but will not be searchable/restorable by users

Logging was not used because no context is available in the kopia callback that is checking if the previous path is nil

## Does this PR need a docs update or release note?

- [ ]  Yes, it's included
- [ ] 🕐 Yes, but in a later PR
- [x]  No 

## Type of change

- [ ] 🌻 Feature
- [x] 🐛 Bugfix
- [ ] 🗺️ Documentation
- [ ] 🤖 Test
- [ ] 💻 CI/Deployment
- [ ] 🧹 Tech Debt/Cleanup

## Issue(s)

* closes #1915

## Test Plan

- [ ] 💪 Manual
- [x]  Unit test
- [ ] 💚 E2E
2023-01-20 21:40:48 +00:00
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2023-01-03 21:35:56 +00:00
2023-01-03 21:35:56 +00:00