Exclude unrecognized tasks from the task manager aggregate API (elastic#202163)

In this PR, I'm removing tasks with a status `unrecognized` from
returning on any `taskStore.aggregate` calls. Without this, we had
unrecognized recurring tasks that were still part of the task manager
capacity calculation under
`assumedAverageRecurringRequiredThroughputPerMinutePerKibana`.

## To Verify
1. Create a few ES Query alerting rules running every 1s
2. Capture the task manager health API report via
`/api/task_manager/_health`
3. Apply the following diff to mark es query alerting tasks as
unrecognized
```
diff --git a/x-pack/plugins/stack_alerts/server/rule_types/es_query/index.ts b/x-pack/plugins/stack_alerts/server/rule_types/es_query/index.ts
index 1988eeb..8d649f4c6a5 100644
--- a/x-pack/plugins/stack_alerts/server/rule_types/es_query/index.ts
+++ b/x-pack/plugins/stack_alerts/server/rule_types/es_query/index.ts
@@ -10,5 +10,5 @@ import { getRuleType } from './rule_type';

 export function register(params: RegisterRuleTypesParams, isServerless: boolean) {
   const { alerting, core } = params;
-  alerting.registerType(getRuleType(core, isServerless));
+  // alerting.registerType(getRuleType(core, isServerless));
 }
diff --git a/x-pack/plugins/task_manager/server/removed_tasks/mark_removed_tasks_as_unrecognized.ts b/x-pack/plugins/task_manager/server/removed_tasks/mark_removed_tasks_as_unrecognized.ts
index e28d522..dbfc1bbd135 100644
--- a/x-pack/plugins/task_manager/server/removed_tasks/mark_removed_tasks_as_unrecognized.ts
+++ b/x-pack/plugins/task_manager/server/removed_tasks/mark_removed_tasks_as_unrecognized.ts
@@ -33,6 +33,11 @@ export async function scheduleMarkRemovedTasksAsUnrecognizedDefinition(
       state: {},
       params: {},
     });
+    try {
+      await taskScheduling.runSoon(TASK_ID);
+    } catch (e) {
+      // Ignore
+    }
   } catch (e) {
     logger.error(`Error scheduling ${TASK_ID} task, received ${e.message}`);
   }
diff --git a/x-pack/plugins/task_manager/server/task_type_dictionary.ts b/x-pack/plugins/task_manager/server/task_type_dictionary.ts
index e0b28ec..142c07bb507 100644
--- a/x-pack/plugins/task_manager/server/task_type_dictionary.ts
+++ b/x-pack/plugins/task_manager/server/task_type_dictionary.ts
@@ -32,6 +32,8 @@ export const REMOVED_TYPES: string[] = [

   'cleanup_failed_action_executions',
   'reports:monitor',
+
+  'alerting:.es-query',
 ];

 /**
```
5. Capture the task manager health API report again via
`/api/task_manager/_health`
6. Notice the number dropped for
`capacity_estimation.value.observed.avg_recurring_required_throughput_per_minute`

Author: mikecote

x-pack/plugins/task_manager/server/task_store.test.ts

@@ -555,7 +555,14 @@ describe('TaskStore', () => {
         body: {
           size: 0,
           query: {
-            bool: { filter: [{ term: { type: 'task' } }, { term: { 'task.enabled': true } }] },
+            bool: {
+              filter: {
+                bool: {
+                  must: [{ term: { type: 'task' } }, { term: { 'task.enabled': true } }],
+                  must_not: [{ term: { 'task.status': 'unrecognized' } }],
+                },
+              },
+            },
           },
           aggs: { testAgg: { terms: { field: 'task.taskType' } } },
         },
@@ -578,7 +585,12 @@ describe('TaskStore', () => {
               must: [
                 {
                   bool: {
-                    filter: [{ term: { type: 'task' } }, { term: { 'task.enabled': true } }],
+                    filter: {
+                      bool: {
+                        must: [{ term: { type: 'task' } }, { term: { 'task.enabled': true } }],
+                        must_not: [{ term: { 'task.status': 'unrecognized' } }],
+                      },
+                    },
                   },
                 },
                 { term: { 'task.taskType': 'bar' } },
@@ -600,7 +612,14 @@ describe('TaskStore', () => {
         body: {
           size: 0,
           query: {
-            bool: { filter: [{ term: { type: 'task' } }, { term: { 'task.enabled': true } }] },
+            bool: {
+              filter: {
+                bool: {
+                  must: [{ term: { type: 'task' } }, { term: { 'task.enabled': true } }],
+                  must_not: [{ term: { 'task.status': 'unrecognized' } }],
+                },
+              },
+            },
           },
           aggs: { testAgg: { terms: { field: 'task.taskType' } } },
           runtime_mappings: { testMapping: { type: 'long', script: { source: `` } } },

x-pack/plugins/task_manager/server/task_store.ts

@@ -34,6 +34,7 @@ import {
   ConcreteTaskInstance,
   ConcreteTaskInstanceVersion,
   TaskInstance,
+  TaskStatus,
   TaskLifecycle,
   TaskLifecycleResult,
   SerializedConcreteTaskInstance,
@@ -842,7 +843,12 @@ function ensureAggregationOnlyReturnsEnabledTaskObjects(opts: AggregationOpts):
   const originalQuery = opts.query;
   const filterToOnlyTasks = {
     bool: {
-      filter: [{ term: { type: 'task' } }, { term: { 'task.enabled': true } }],
+      filter: {
+        bool: {
+          must: [{ term: { type: 'task' } }, { term: { 'task.enabled': true } }],
+          must_not: [{ term: { 'task.status': TaskStatus.Unrecognized } }],
+        },
+      },
     },
   };
   const query = originalQuery