[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/form-field/error-summary.component.ts

@@ -1,6 +1,3 @@
-// FIXME: Update this file to be type safe and remove this and next line
-// @ts-strict-ignore
-
 import { Component, input } from "@angular/core";
 import { AbstractControl, UntypedFormGroup } from "@angular/forms";
 
@@ -21,7 +18,8 @@ export class BitErrorSummary {
   readonly formGroup = input<UntypedFormGroup>();
 
   get errorCount(): number {
-    return this.getErrorCount(this.formGroup());
+    const form = this.formGroup();
+    return form ? this.getErrorCount(form) : 0;
   }
 
   get errorString() {