Tab switching loads outdated watchlist information

[xinyis991105]

Your environment
Current master branch of Autolab on my local machine Mac OS

Steps To Reproduce

1. Go to a course with an appropriate amount of student information, so that the metrics feature has something to work with in the first place.
2. Select risk conditions that will generate new watchlist information. Save and wait until the new information is successfully calculated.
3. Switch to the watchlist tab. New watchlist instances are expected to show up. Currently, the list remains empty.
4. Do a browser refresh. The new watchlist instances should now be available. Contact/Resolve certain instances. Switch to Contacted/Resolved tabs. Contacted/Resolved instances are expected to show up. Currently, another browser refresh is needed for that to happen.

I'm suspecting it might be something to do with switching from uglifier to terser for JavaScript but further research is needed for this. Let me know if this does not apply to other environments.

Screenshots
If applicable, add screenshots to help explain your problem.

[victorhuangwq]

I have tested this issue both locally and on autolab-dev.

Locally, the issue was definitely replicated as per described.
However, when tested on autolab-dev, the issue does not occur.

I suspect it is due to a concurrency issue (the database updating on local machine occurs slower than it's getting retrieved). As such, I think I will defer addressing this issue until we deploy our master onto the autolab-dev branch for testing.