Fix to display historic COB-value (from OpenAps) when scolling back in time

[bjornoleh]

Copied from 7aa606d by @klalle / @maja-lofgren

Please see #6916 and #5241 for details.

[bjornoleh]

The CI test failed at https://github.com/nightscout/cgm-remote-monitor/actions/runs/5924138923/job/16061111728#step:7:5346

COB
set a pill to the current COB:
TypeError: Cannot read properties of undefined (reading 'lastSuggested')
at Object.updateVisualisation (lib/plugins/cob.js:8:3117)
at Context. (tests/cob.test.js:95:9)
at processImmediate (node:internal/timers:466:21)

[bjornoleh]

I don’t know if the proposed fix is a good one or a hack. But it has been working well for us using iAPS (previously called FreeAPS X). It should also work with AAPS, which is what this fix was targeted at by the original author. I don’t know if it would work with iOS DIY Loop

[bewest]

Excellent, looks like this will require a bit of work for loop as well. Great start on fixing this old bug!

[JohnKitching]

Is this still being worked on?
I'm not sure from the comments what it's waiting on.