[Disco] Propagate structlog/logging config to workers

[Lunderberg]

This is a follow-up to #16618, which propagates the structlog configuration to disco worker processes. For configurations that use structlog.stdlib to integrate structlog with the stdlib logging module, this integration must also be forwarded.

[slyubomirsky]

This seems straightforward enough, though I'm not aware of the wider context.

[Lunderberg]

This seems straightforward enough, though I'm not aware of the wider context.

Thank you. For context, some applications use structlog to provide more flexible logging than python's stdlib logging. The structlog configuration determines what pre-processing is done for the log statements (e.g. appending contextual information to a log statement). When starting child processes using multiprocessing, it would be useful for the child processes to format/save their logs in the same manner as the parent, but this doesn't occur by default. In PR#16618, I added handling to forward the structlog configuration from the main process to the tvm.runtime.disco worker processes.

However, some configurations (example from structlog's documentation integrate structlog with the stdlib logging. The previous implementation only forwarded the configuration held by structlog, and didn't forward the configuration within the stdlib logging. This PR closes that gap.