chore: deps update (#11968)

# Which Problems Are Solved
This pr updates major and minor dependencies and is the first step on
getting our dependabot alerts cut down.

# How the Problems Are Solved

Depedency updates across the board eg:
- Upgrade Angular to v21
- Upgrade next.js to v16.2
- Upgrade tailwind to v4 in the login
- Upgrade vitest to v4 in the login

This is an uncompleted list refer to the changed files for a full
overview of all the updates.

# Additional Changes

Migrated all control flow in the console to the modern control flow
syntax.
Fixed the dependsOn setting for the @zitadel/login:test-unit nx target.

# Additional Context

- Closes https://github.com/zitadel/zitadel/issues/11274

---------

Co-authored-by: Max Peintner <[email protected]>

console/src/app/app.component.html

@@ -1,12 +1,11 @@
 <div class="main-container">
-  <ng-container *ngIf="authService.user | async as user">
+  @if (authService.user | async; as user) {
     <cnsl-header
       [org]="activeOrganizationQuery.data()"
       [user]="user"
       [isDarkTheme]="componentCssClass === 'dark-theme'"
       (changedActiveOrg)="changedOrg()"
     />
-
     <cnsl-nav
       id="mainnav"
       class="nav"
@@ -15,7 +14,7 @@
       [user]="user"
       [isDarkTheme]="componentCssClass === 'dark-theme'"
     ></cnsl-nav>
-  </ng-container>
+  }
 
   <div class="router-container" [@routeAnimations]="prepareRoute(outlet)">
     <div class="outlet">