Don't send updates to myMdC when all jobs are pending

Description

We are hitting rate limits for requests to myMdC. We believe this is at least partly down to report jobs waiting in a queue, because we still update myMdC for each run every 60 seconds, until calibration for that run finishes. This aims to cut the requests we send to myMdC:

• Skip updating the status for runs when all jobs are pending - these updates are not very informative anyway.
• When correction finishes, update the status with 1 request instead of 2.

How Has This Been Tested?

Deployed on max-exfl017, recalibrated some runs from test proposal, checked that status updates still show up as expected.

Types of changes

• Bug fix (non-breaking change which fixes an issue)

Checklist:

• My code follows the code style of this project.

Reviewers

@danilevc @schmidtp