[9.2] Add consecutiveMatches to action context (#244997) (#245167)

# Backport

This will backport the following commits from `main` to `9.2`:
- [Add consecutiveMatches to action context
(#244997)](#244997)

<!--- Backport version: 9.6.6 -->

### Questions ?
Please refer to the [Backport tool
documentation](https://github.com/sorenlouv/backport)

<!--BACKPORT [{"author":{"name":"Ersin
Erdal","email":"[email protected]"},"sourceCommit":{"committedDate":"2025-12-03T19:56:30Z","message":"Add
consecutiveMatches to action context (#244997)\n\nFixes:
#242572","sha":"dd75acf58471952cd89bf0ed39963d3c077c59c4","branchLabelMapping":{"^v9.3.0$":"main","^v(\\d+).(\\d+).\\d+$":"$1.$2"}},"sourcePullRequest":{"labels":["bug","release_note:fix","Team:ResponseOps","backport:version","v9.1.0","v9.2.0","v9.3.0"],"title":"Add
consecutiveMatches to action
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consecutiveMatches to action context (#244997)\n\nFixes:
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BACKPORT-->

Co-authored-by: Ersin Erdal <[email protected]>

Author: kibanamachine

x-pack/platform/plugins/shared/alerting/server/task_runner/action_scheduler/schedulers/per_alert_action_scheduler.test.ts

@@ -20,6 +20,7 @@ import { Alert } from '../../../alert';
 import type { AlertInstanceContext, AlertInstanceState } from '@kbn/alerting-state-types';
 import { ActionsCompletion } from '@kbn/alerting-state-types';
 import { TaskPriority } from '@kbn/task-manager-plugin/server';
+import { transformActionParams } from '../../transform_action_params';
 
 const alertingEventLogger = alertingEventLoggerMock.create();
 const actionsClient = actionsClientMock.create();
@@ -112,6 +113,10 @@ const getResult = (
   actionToLog: { alertGroup: 'default', alertId, id: actionId, uuid: actionUuid, typeId: 'test' },
 });
 
+jest.mock('../../transform_action_params', () => ({
+  transformActionParams: jest.fn(),
+}));
+
 let clock: sinon.SinonFakeTimers;
 
 describe('Per-Alert Action Scheduler', () => {
@@ -211,8 +216,8 @@ describe('Per-Alert Action Scheduler', () => {
     >;
 
     beforeEach(() => {
-      newAlert1 = generateAlert({ id: 1 });
-      newAlert2 = generateAlert({ id: 2 });
+      newAlert1 = generateAlert({ id: 1, activeCount: 3 });
+      newAlert2 = generateAlert({ id: 2, activeCount: 5 });
       alerts = { ...newAlert1, ...newAlert2 };
     });
 
@@ -240,6 +245,16 @@ describe('Per-Alert Action Scheduler', () => {
         getResult('action-2', '1', '222-222'),
         getResult('action-2', '2', '222-222'),
       ]);
+
+      expect(transformActionParams).toHaveBeenCalledTimes(4);
+      expect(transformActionParams).toHaveBeenCalledWith(
+        expect.objectContaining({
+          actionId: 'action-1',
+          alertId: 'rule-id-1',
+          consecutiveMatches: 3,
+          alertUuid: expect.any(String),
+        })
+      );
     });
 
     test('test should create action to schedule with priority if specified for each alert and each action', async () => {

x-pack/platform/plugins/shared/alerting/server/task_runner/action_scheduler/schedulers/per_alert_action_scheduler.ts

@@ -223,6 +223,7 @@ export class PerAlertActionScheduler<
         actionParams: action.params,
         flapping: alert.getFlapping(),
         ruleUrl: ruleUrl?.absoluteUrl,
+        consecutiveMatches: alert.getActiveCount(),
       };
 
       if (alert.isAlertAsData()) {