Enhance ProspectContainer: restrict interaction visibility to Ambassador users and update button icon styling

FoodsharingSiegen.Server/Controls/ProspectContainer.razor

@@ -154,7 +154,7 @@
         </Button>
 
 
-        @if(StateFilter > ProspectStateFilter.OnBoarding) 
+        @if(StateFilter > ProspectStateFilter.OnBoarding && CurrentUser.IsInGroup(UserGroup.Ambassador)) 
         {
             @if(Prospect?.Complete != true)
             {
@@ -173,7 +173,12 @@
                     title="Fertigstellen rückgängig"
                     Clicked="@(() => AddInteraction(InteractionType.Complete))"
                     Visibility="@(CurrentUser.IsInGroup(UserGroup.Ambassador) ? Visibility.Default : Visibility.Invisible)"
-                ><i class="fa-solid fa-flag"></i>
+                
+            >
+                <span class="fa-stack" style="vertical-align: top;">
+                    <i class="fa-solid fa-slash fa-xl"></i>
+                    <i class="fa-solid fa-flag fa-stack-1x"></i>
+                </span>
                 </Button>
             }
         }