TimerThread does not respond to goby_coroner health request

[tsaubergine]

Consistently happens:

process { name: "goby_frontseat_interface" pid: 232 main { name: "goby_frontseat_interface" thread_id: 232 state: HEALTH__FAILED child { name: "goby::middleware::TimerThread<0>" uid: 1 state: HEALTH__FAILED error: ERROR__THREAD_NOT_RESPONDING } child { name: "health_monitor" thread_id: 510 uid: 0 state: HEALTH__OK } } }