MOBILE-3833 core: Add missing managers destroy

src/addons/badges/pages/issued-badge/issued-badge.page.ts

@@ -12,7 +12,7 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-import { Component, OnInit } from '@angular/core';
+import { Component, OnDestroy, OnInit } from '@angular/core';
 import { IonRefresher } from '@ionic/angular';
 import { CoreTimeUtils } from '@services/utils/time';
 import { CoreDomUtils } from '@services/utils/dom';
@@ -34,7 +34,7 @@ import { CoreRoutedItemsManagerSourcesTracker } from '@classes/items-management/
     selector: 'page-addon-badges-issued-badge',
     templateUrl: 'issued-badge.html',
 })
-export class AddonBadgesIssuedBadgePage implements OnInit {
+export class AddonBadgesIssuedBadgePage implements OnInit, OnDestroy {
 
     protected badgeHash = '';
     protected userId!: number;
@@ -71,6 +71,13 @@ export class AddonBadgesIssuedBadgePage implements OnInit {
         this.badges.start();
     }
 
+    /**
+     * @inheritdoc
+     */
+    ngOnDestroy(): void {
+        this.badges.destroy();
+    }
+
     /**
      * Fetch the issued badge required for the view.
      *

src/addons/mod/forum/pages/new-discussion/new-discussion.page.ts

@@ -640,6 +640,7 @@ export class AddonModForumNewDiscussionPage implements OnInit, OnDestroy, CanLea
             CoreSync.unblockOperation(AddonModForumProvider.COMPONENT, this.syncId);
         }
         this.isDestroyed = true;
+        this.discussions?.destroy();
     }
 
 }

src/core/features/settings/pages/site/site.ts

@@ -126,6 +126,7 @@ export class CoreSitePreferencesPage implements AfterViewInit, OnDestroy {
     ngOnDestroy(): void {
         this.isDestroyed = true;
         this.sitesObserver?.off();
+        this.handlers.destroy();
     }
 
 }