No error raised on multithreaded store failure

If using multithreaded store_timeseries, there's no way to determine if there was an error.

The ApiError exception used in the single chunk case is not raised in the multithreaded case.

I don't necessarily need to know what the specific error(s) are, but I'd like to know if there was any error that occurred. The only way to know that currently is to look at the log.

Example log entries I've seen:

2026-03-20 13:21:38,321 - ERROR - Error storing chunk from 1569803400000 to 1569888900000: Object of type function is not JSON serializable
...
2026-03-20 13:21:46,873 - ERROR - CDA Error: response=<Response [400]>
2026-03-20 13:21:46,876 - ERROR - Error storing chunk from 1569803400000 to 1569888900000: CWMS API Error (https://wm.spk.ds.usace.army.mil/spk-data/timeseries?create-as-lrts=False&store-rule=Do+Not+Replace&override-protection=False) 400. Check that your parameters are correct. Bad Request

Start at the multithreaded store_timeseries entry point and compare its error handling with the single-chunk path that raises ApiError. Exercise the multithreaded path using the failure cases shown in the logs and verify that callers can detect when any chunk failed, rather than needing to inspect logs.