Make interval in rrule config required

[ersin-erdal]

Fixes the optional interval settings in the rrule schema

[elasticmachine]

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

[elasticmachine]

💚 Build Succeeded

• Buildkite Build
• Commit: e27af5c

Metrics [docs]

✅ unchanged

[kibanamachine]

Starting backport for target branches: 8.19

https://github.com/elastic/kibana/actions/runs/14804684907

[kibanamachine]

💔 All backports failed

Status	Branch	Result
❌	8.19	Backport failed because of merge conflicts You might need to backport the following PRs to 8.19: - [Security Solution][Admin][Trusted Apps] Fixes wrong warning bug for mac and linux in trusted apps form (#218195) - [Observability] [Alert] Add context.grouping action variable in SLO Burn rate and ES Query rules (#213550) - Reorganize footer items for Solutions (#218050) - [ES|QL] Renames the ESQLRealField type to ESQLFieldWithMetadata (#219894) - [Incident Management] Investigation Guide backend (#216377) - Add rrule schema to task schedule with intermediate release (#219429) - [Security Solution] [Detections] Removes tech preview text from eql seq suppression ui (#219870) - fix(slo): alert deletion (#219876) - feat(slo): lock resource installation (#219747) - feat(slo): Bulk delete UI (#219634)

Manual backport

To create the backport manually run:

node scripts/backport --pr 220003

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Please refer to the Backport tool documentation

[kibanamachine]

Friendly reminder: Looks like this PR hasn’t been backported yet.
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You can also create backports manually by running node scripts/backport --pr 220003 locally
cc: @ersin-erdal

[kibanamachine]

Friendly reminder: Looks like this PR hasn’t been backported yet.
To create automatically backports add a backport:* label or prevent reminders by adding the backport:skip label.
You can also create backports manually by running node scripts/backport --pr 220003 locally
cc: @ersin-erdal

[kibanamachine]

Friendly reminder: Looks like this PR hasn’t been backported yet.
To create automatically backports add a backport:* label or prevent reminders by adding the backport:skip label.
You can also create backports manually by running node scripts/backport --pr 220003 locally
cc: @ersin-erdal

[kibanamachine]

Friendly reminder: Looks like this PR hasn’t been backported yet.
To create automatically backports add a backport:* label or prevent reminders by adding the backport:skip label.
You can also create backports manually by running node scripts/backport --pr 220003 locally
cc: @ersin-erdal

[kibanamachine]

Friendly reminder: Looks like this PR hasn’t been backported yet.
To create automatically backports add a backport:* label or prevent reminders by adding the backport:skip label.
You can also create backports manually by running node scripts/backport --pr 220003 locally
cc: @ersin-erdal

[kibanamachine]

Friendly reminder: Looks like this PR hasn’t been backported yet.
To create automatically backports add a backport:* label or prevent reminders by adding the backport:skip label.
You can also create backports manually by running node scripts/backport --pr 220003 locally
cc: @ersin-erdal

[kibanamachine]

Friendly reminder: Looks like this PR hasn’t been backported yet.
To create automatically backports add a backport:* label or prevent reminders by adding the backport:skip label.
You can also create backports manually by running node scripts/backport --pr 220003 locally
cc: @ersin-erdal