chore(deps): upgrade Angular 20 → 21

Migrates to Angular 21.0.0: updates tsconfig lib to es2022, migrates
bootstrap options in main.ts, and completes control flow migration
(*ngFor/*ngIf → @for/@if) in jumps and jumps-by-month templates to
resolve duplicate ng-template name conflicts skipped by the schematic.
Also fixes pre-commit hook to load nvm before running tests.

src/app/components/shared/list-errors/list-errors.component.ts

@@ -1,5 +1,5 @@
 import { Component, Input } from '@angular/core';
-import { NgForOf, NgIf } from '@angular/common';
+
 import { MatCardModule } from '@angular/material/card';
 
 import { Errors } from 'src/app/core';
@@ -7,7 +7,7 @@ import { Errors } from 'src/app/core';
 @Component({
     selector: 'app-list-errors',
     templateUrl: './list-errors.component.html',
-    imports: [NgIf, NgForOf, MatCardModule],
+    imports: [MatCardModule],
 })
 export class ListErrorsComponent {
     errorList: string[] = [];