feat(system error monitor): use polling subscriber #7486
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Description
The same as #6997 based on the discussion, the polling subscriber is used in the system error monitor.
Tests performed
psim test were performed
Since there was no ROSbag file for the new topic type, I changed the topic type in the code and verified that the topic was output using the ROSbag file of the old topic type.
Effects on system behavior
Nothing but more efficient CPU usage
Interface changes
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