Add JS toggle logic to close menu on nav link click

Introduced IJSRuntime to handle JavaScript calls and implemented `NavLinkClickedAsync` to automatically uncheck the menu toggle on navigation. Updated all NavLinks to trigger this logic, improving user experience by closing the menu after a link is clicked.

FoodsharingSiegen.Server/Shared/NavMenu.razor.cs

@@ -3,6 +3,7 @@ using FoodsharingSiegen.Contracts.Model;
 using FoodsharingSiegen.Server.Auth;
 using Microsoft.AspNetCore.Components;
 using Microsoft.Extensions.Options;
+using Microsoft.JSInterop;
 
 namespace FoodsharingSiegen.Server.Shared
 {
@@ -11,6 +12,9 @@ namespace FoodsharingSiegen.Server.Shared
     /// </summary>
     public partial class NavMenu
     {
+        [Inject]
+        private IJSRuntime JsRuntime { get; set; } = null!;
+        
         #region Dependencies
 
         [Inject]
@@ -50,5 +54,10 @@ namespace FoodsharingSiegen.Server.Shared
         }
 
         #endregion
+
+        private async Task NavLinkClickedAsync()
+        {
+            await JsRuntime.InvokeVoidAsync("eval", "document.getElementById('menu-toggler').checked=false;");
+        }
     }
 }