Fix MudStepperExtended Custom Action Button Not Showing (#586)

Author: mckaragoz

src/CodeBeam.MudBlazor.Extensions/Components/StepperExtended/MudStepperExtended.razor

@@ -202,6 +202,16 @@
                 }
             </div>
         }
+        else if (ShowActions)
+        {
+            <div class="@ActionClassname">
+                @if (StepperActionsJustify == StepperActionsJustify.End)
+                {
+                    <MudSpacer />
+                }
+                @ActionContent
+            </div>
+        }
     </MudStack>
 </CascadingValue>