Merge remote-tracking branch 'origin/v8/bugfix/examine-reindex' into v8/8.6

(cherry picked from commit 8fddb52f9a)

src/Umbraco.Web/Scheduling/SimpleTask.cs

@@ -0,0 +1,32 @@
+using System;
+using System.Threading;
+using System.Threading.Tasks;
+
+namespace Umbraco.Web.Scheduling
+{
+    /// <summary>
+    /// A simple task that executes a delegate synchronously
+    /// </summary>
+    internal class SimpleTask : IBackgroundTask
+    {
+        private readonly Action _action;
+
+        public SimpleTask(Action action)
+        {
+            _action = action;
+        }
+
+        public bool IsAsync => false;
+
+        public void Run() => _action();
+
+        public Task RunAsync(CancellationToken token)
+        {
+            throw new NotImplementedException();
+        }
+
+        public void Dispose()
+        {
+        }
+    }
+}