Group tooltips for line chart

[Steve-Mcl]

Description

Groups tooltips on line type charts using the interactions options

NOTES:

• I wrapped the call to this.chart.update into a chartUpdate method so that we can debounce the multiple calls generated by property updates (the props are watched individually)
  • I then noted we dont actually support dynamic prop updates 🤦‍♂️ BUT I left it in as dynamic updates are listed as a TODO and this will avoid unnecessary chart update calls.
• I added some debugging where I add the chart object to the window object so that during debugging, I can see the actual config and data applied to the chart. This was super useful. So instead of deleting it, I let it in commented with a note for future devs to take advantage of. fee free to remove it.

Related Issue(s)

#1254

Checklist

• I have read the contribution guidelines
• Suitable unit/system level tests have been added and they pass
• Documentation has been updated
  • Upgrade instructions
  • Configuration details
  • Concepts
• Changes flowforge.yml?
  • Issue/PR raised on FlowFuse/helm to update ConfigMap Template
  • Issue/PR raised on FlowFuse/CloudProject to update values for Staging/Production

Labels

• Includes a DB migration? -> add the area:migration label

[Steve-Mcl]

NOTE: I will add tests for this once #1331 is merged.

[Steve-Mcl]

Merged your correction to the mode and addition for scatter. Ta.
I will need to update tests to pick up additional grouping chart type for the above.

Addressed you comment about window.uiChart in comment here: #1336 (comment)

[Steve-Mcl]

Tests updated/added to cover changes for scatter and bar.

All passing bar one of the control spec tests (usual suspect) (really would love to get that reliable!)

[joepavitt]

(really would love to get that reliable!)

@Steve-Mcl - @cstns and I have collectively spent days trying - we've given up.

[joepavitt]

Works great - thanks @Steve-Mcl