[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>

libs/components/src/callout/callout.component.html

@@ -1,6 +1,6 @@
 <aside
   class="tw-mb-4 tw-box-border tw-rounded-lg tw-bg-background tw-ps-3 tw-pe-3 tw-py-2 tw-leading-5 tw-text-main"
-  [ngClass]="calloutClass"
+  [ngClass]="calloutClass()"
   [attr.aria-labelledby]="titleId"
 >
   @if (titleComputed(); as title) {

libs/components/src/callout/callout.component.ts

@@ -1,5 +1,3 @@
-// FIXME: Update this file to be type safe and remove this and next line
-// @ts-strict-ignore
 import { Component, computed, input } from "@angular/core";
 
 import { I18nService } from "@bitwarden/common/platform/abstractions/i18n.service";
@@ -50,11 +48,11 @@ export class CalloutComponent {
     return title;
   });
 
-  protected titleId = `bit-callout-title-${nextId++}`;
+  protected readonly titleId = `bit-callout-title-${nextId++}`;
 
   constructor(private i18nService: I18nService) {}
 
-  get calloutClass() {
+  protected readonly calloutClass = computed(() => {
     switch (this.type()) {
       case "danger":
         return "tw-bg-danger-100";
@@ -65,5 +63,5 @@ export class CalloutComponent {
       case "warning":
         return "tw-bg-warning-100";
     }
-  }
+  });
 }