[Job] Make submit --attach more robust to intermittent connection issues

[daniel-de-vera]

We want signadot job submit --attach to be more robust against intermittent connection issues. Nowadays whenever one of the streams is interrupted (either from CLI <-> ControlPlane or from ControlPlane <-> Cluster) the command will exit. This presents problems when using it in a CI context (pipelines are failing when indeed the jobs are successful).