Add telemetry for uploading failed runs

[henrymercer]

#1393 started uploading failed runs to the code scanning API. In preparation for rolling this out, it would be useful to gather some telemetry, particularly since things are set up to be unlikely to hard-fail, so we probably won't get any customer feedback.

• Example run with a skipped reason
• Example run with an error

Merge / deployment checklist

• Confirm this change is backwards compatible with existing workflows.
• Confirm the readme has been updated if necessary.
• Confirm the changelog has been updated if necessary.

[angelapwen]

Thanks!!