Full rebuild after killing daemon

If I do `buck2 build //...` then `buck2 kill` then `buck2 build //...` it does a full rebuild every single time. I have the following in my buckconfig.

```
[buck2]
materializations = deferred
sqlite_materializer_state = true
defer_write_actions = true
hash_all_commands = true
restarter = true
```

This seems like a bug, wondering if this is expected behavior.

Reproduce the sequence `buck2 build //...`, `buck2 kill`, and `buck2 build //...` with the listed buckconfig settings, comparing whether the second build is a full rebuild. Trace the daemon shutdown and materializer state handling, then verify that artifacts are reused after `buck2 kill`, or establish and document that the behavior is expected.

Written by the indexing model from the issue text.