health-events.yaml Fix json_extract_scalar issues in lines 37-40

[cedricweider]

Issue #1485 :
I was attempting to update the Health Events Dashboard from v2.1.0 to v3.0.0 and got the following error several times, even while trying with cid-cmd update --force.
This issue is present in v4.4.11 (v4.4.12 could not yet be tested as we have another issue deploying it - see issue #1484 )

Athena query status failed : line 37:10: Unexpected parameters (array(varchar), varchar(4)) for function json_extract_scalar. Expected: json_extract_scalar(varchar(x), jsonpath), json_extract_scalar(json, jsonpath)

Looking at the health_events_detail_data table, it appears that the "personas" column is already of type array(varchar) and not json text, so the json_extract_scalar doesn't seem to be needed.
Replacing code in the lines 37-40 with the equivalent TRY(("personas")[X]) "persona_0X" expressions fixed the issue for me.

Description of changes:
I modified the lines 37 to 40 Athena view query definition in dashboards/health-events/health-events.yaml by removing the json_extract_scalar expression.

By submitting this pull request, I confirm that you can use, modify, copy, and redistribute this contribution, under the terms of your choice.

Best regards,
Cédric Weider

[esc1144]

Superseding with a wrapper to accommodate possibility that glue makes the field a string. Kind of a Schrödinger's cat issue.

TRY(json_extract_scalar(json_format(CAST("personas" AS JSON)), '$[0]')) AS "persona_01"

[cedricweider]

@esc1144 issue solved with your changes in PR #1487