fix: ets config storage table race condition #2270
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fixes race condition causing ets crud actions to error out. Wraps child termination in a try/do for better resilience, error is logged.
In this case, crashing the supervisor on error when terminating the child does not have a commensurate benefit to be gained that restarting the supervisor state would provide (à la let-it-crash). Crashing supervisor would cause parent (SourceSup) to try to crash and restart, disrupting ingestion further.