refactor(docs-infra): removed unused imports (#62441)

Cleans up instances of unused imports in a few shared docs components.

PR Close #62441

adev/shared-docs/components/search-dialog/search-dialog.component.ts

@@ -84,7 +84,7 @@ export class SearchDialog {
       this.searchQuery.set(value);
     });
 
-    // Thinkig about refactoring this to a single afterRenderEffect ?
+    // Thinking about refactoring this to a single afterRenderEffect ?
     // Answer: It won't have the same behavior
     effect(() => {
       this.items();

adev/shared-docs/components/viewers/docs-viewer/docs-viewer.component.ts

@@ -6,7 +6,7 @@
  * found in the LICENSE file at https://angular.dev/license
  */
 
-import {CommonModule, DOCUMENT, isPlatformBrowser, Location} from '@angular/common';
+import {DOCUMENT, isPlatformBrowser, Location} from '@angular/common';
 import {
   ApplicationRef,
   ChangeDetectionStrategy,
@@ -18,9 +18,7 @@ import {
   EnvironmentInjector,
   inject,
   Injector,
-  Input,
   PLATFORM_ID,
-  SimpleChanges,
   Type,
   ViewContainerRef,
   ViewEncapsulation,

adev/shared-docs/services/table-of-contents-loader.service.ts

@@ -7,10 +7,9 @@
  */
 
 import {DOCUMENT} from '@angular/common';
-import {inject, signal, Injectable, PLATFORM_ID, DestroyRef} from '@angular/core';
+import {inject, signal, Injectable, DestroyRef} from '@angular/core';
 
 import {TableOfContentsItem, TableOfContentsLevel} from '../interfaces/index';
-import {on} from 'events';
 
 /**
  * Name of an attribute that is set on an element that should be