getSearchIndexManagerResponse converts HostUnreachable errors it receives from TaskExecutor into more generic errors to obfuscate the mongot's host and port. This is too specific though, since TaskExecutor could return a number of different network errors. This should instead catch any error that is in the NetworkError category.

e.g.

catch (const ExceptionFor<ErrorCategory::NetworkError>& e) { }

https://github.com/mongodb/mongo/blob/e204c648682f23e15c2a44218615fc2074f04fd2/src/mongo/db/query/search/search_index_common.cpp#L163-L167