[ResponseOps][Alerting] Elasticsearch query rule type allows SIZE: 0, but flags as error on re-edit

[doakalexi]

Resolves #138759

Summary

Adds a null check to the form validation so that a value of 0 doesnt cause errors.

Checklist

• Unit or functional tests were updated or added to match the most common scenarios

To verify

• Create an es query rule with the size set to 0. Verify that there are no errors
• Try to edit that es query rule, and verify that there are no errors on the edit form when you open it

[elasticmachine]

Pinging @elastic/response-ops (Team:ResponseOps)

[ymao1]

Is this fix something we could also do for the threshold conditions fields on the ES Query and Index Threshold rule types?

[doakalexi]

Is this fix something we could also do for the threshold conditions fields on the ES Query and Index Threshold rule types?

sure! I can do that
Resolved in f2477e4

[ymao1]

LGTM!

[ersin-erdal]

Left a note for a small fix.
After that, LGTM

[kibana-ci]

💚 Build Succeeded

• Buildkite Build
• Commit: c961e70

Metrics [docs]

Async chunks

Total size of all lazy-loaded chunks that will be downloaded as the user navigates the app

id	before	after	diff
triggersActionsUi	671.8KB	671.9KB	+40.0B

Page load bundle

Size of the bundles that are downloaded on every page load. Target size is below 100kb

id	before	after	diff
stackAlerts	13.9KB	13.9KB	+17.0B

History

• 💚 Build #78690 succeeded fec3449
• 💚 Build #77482 succeeded d5f0b8b
• 💚 Build #77182 succeeded f2477e4
• 💚 Build #76870 succeeded 7297353

To update your PR or re-run it, just comment with:
@elasticmachine merge upstream