pg: Fail to convert `Time(0)`

[jasobrown-rs]

Summary

Antithesis hit this error (report):

{"fields":{"error":"DfValue conversion error: Failed to convert value of type Unknown to the type Time(6): unsupported for Time(0)","message":"Error received from noria, sending query to fallback"},"level":"WARN","target":"readyset_adapter::backend","timestamp":"2025-10-30T02:55:17.079843Z"}

This appears to be an error after reading out of the readyset cache (see readyset-adapter::Backend::execute_cascade())

[jasobrown-rs]

4d374d486feddccf.tar.zst

logictest that triggers this failure