MOBILE-3636 core: Use start to watch splitview outlet on list manager

src/addons/badges/pages/user-badges/user-badges.ts

@@ -51,8 +51,7 @@ export class AddonBadgesUserBadgesPage implements AfterViewInit, OnDestroy {
     async ngAfterViewInit(): Promise<void> {
         await this.fetchInitialBadges();
 
-        this.badges.watchSplitViewOutlet(this.splitView);
-        this.badges.start();
+        this.badges.start(this.splitView);
     }
 
     /**

src/core/classes/page-items-list-manager.ts

@@ -55,8 +55,12 @@ export abstract class CorePageItemsListManager<Item> {
 
     /**
      * Process page started operations.
+     *
+     * @param splitView Split view component.
      */
-    async start(): Promise<void> {
+    async start(splitView: CoreSplitViewComponent): Promise<void> {
+        this.watchSplitViewOutlet(splitView);
+
         // Calculate current selected item.
         const route = CoreNavigator.instance.getCurrentRoute({ pageComponent: this.pageComponent });
         if (route !== null && route.firstChild) {

src/core/features/grades/pages/course/course.page.ts

@@ -63,8 +63,7 @@ export class CoreGradesCoursePage implements AfterViewInit, OnDestroy {
     async ngAfterViewInit(): Promise<void> {
         await this.fetchInitialGrades();
 
-        this.grades.watchSplitViewOutlet(this.splitView);
-        this.grades.start();
+        this.grades.start(this.splitView);
     }
 
     /**

src/core/features/grades/pages/courses/courses.ts

@@ -42,8 +42,7 @@ export class CoreGradesCoursesPage implements OnDestroy, AfterViewInit {
     async ngAfterViewInit(): Promise<void> {
         await this.fetchInitialCourses();
 
-        this.courses.watchSplitViewOutlet(this.splitView);
-        this.courses.start();
+        this.courses.start(this.splitView);
     }
 
     /**

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

@@ -33,8 +33,7 @@ export class CoreSettingsIndexPage implements AfterViewInit, OnDestroy {
      */
     ngAfterViewInit(): void {
         this.sections.setItems(CoreSettingsConstants.SECTIONS);
-        this.sections.watchSplitViewOutlet(this.splitView);
-        this.sections.start();
+        this.sections.start(this.splitView);
     }
 
     /**

src/core/features/user/pages/participants/participants.ts

@@ -62,8 +62,7 @@ export class CoreUserParticipantsPage implements OnInit, AfterViewInit, OnDestro
     async ngAfterViewInit(): Promise<void> {
         await this.fetchInitialParticipants();
 
-        this.participants.watchSplitViewOutlet(this.splitView);
-        this.participants.start();
+        this.participants.start(this.splitView);
     }
 
     /**