[PM-15847] libs/components strict migration (#15738)

This PR migrates `libs/components` to use strict TypeScript.

- Remove `@ts-strict-ignore` from each file in `libs/components` and resolved any new compilation errors
- Converted ViewChild and ContentChild decorators to use the new signal-based queries using the [Angular signal queries migration](https://angular.dev/reference/migrations/signal-queries)
  - Made view/content children `required` where appropriate, eliminating the need for additional null checking. This helped simplify the strict migration.

---

Co-authored-by: Vicki League <vleague@bitwarden.com>

apps/browser/src/platform/popup/layout/popup-back.directive.ts

@@ -1,8 +1,6 @@
-import { Directive, Optional } from "@angular/core";
+import { Directive, inject, model } from "@angular/core";
 
-import { LogService } from "@bitwarden/common/platform/abstractions/log.service";
-import { ValidationService } from "@bitwarden/common/platform/abstractions/validation.service";
-import { BitActionDirective, ButtonLikeAbstraction } from "@bitwarden/components";
+import { BitActionDirective, FunctionReturningAwaitable } from "@bitwarden/components";
 
 import { PopupRouterCacheService } from "../view-cache/popup-router-cache.service";
 
@@ -11,15 +9,10 @@ import { PopupRouterCacheService } from "../view-cache/popup-router-cache.servic
   selector: "[popupBackAction]",
 })
 export class PopupBackBrowserDirective extends BitActionDirective {
-  constructor(
-    buttonComponent: ButtonLikeAbstraction,
-    private router: PopupRouterCacheService,
-    @Optional() validationService?: ValidationService,
-    @Optional() logService?: LogService,
-  ) {
-    super(buttonComponent, validationService, logService);
-
-    // override `bitAction` input; the parent handles the rest
-    this.handler.set(() => this.router.back());
-  }
+  private routerCacheService = inject(PopupRouterCacheService);
+  // Override the required input to make it optional since we set it automatically
+  override readonly handler = model<FunctionReturningAwaitable>(
+    () => this.routerCacheService.back(),
+    { alias: "popupBackAction" },
+  );
 }

apps/browser/src/platform/popup/layout/popup-layout.stories.ts

@@ -343,7 +343,7 @@ export default {
               generator: "Generator",
               send: "Send",
               settings: "Settings",
-              labelWithNotification: (label: string) => `${label}: New Notification`,
+              labelWithNotification: (label: string | undefined) => `${label}: New Notification`,
             });
           },
         },