Uses time provider for delays

Ensures delays use the configured time provider, allowing for easier testing and mocking of time-dependent operations.

This change replaces direct calls to `Task.Delay` with the `TimeProvider` instance.

Author: niemyjski

src/Foundatio.Repositories.Elasticsearch/Repositories/ElasticReindexer.cs

@@ -1,4 +1,4 @@
-using System;
+using System;
 using System.Collections.Generic;
 using System.Diagnostics;
 using System.Linq;
@@ -228,7 +228,7 @@ private async Task<ReindexResult> InternalReindexAsync(ReindexWorkItem workItem,
             if (status.Task.Status.Total < 100)
                 timeToWait = TimeSpan.FromMilliseconds(100);
 
-            await Task.Delay(timeToWait, cancellationToken).AnyContext();
+            await _timeProvider.Delay(timeToWait, cancellationToken).AnyContext();
         } while (!cancellationToken.IsCancellationRequested);
         sw.Stop();
 

src/Foundatio.Repositories.Elasticsearch/Repositories/ElasticRepositoryBase.cs

@@ -792,7 +792,7 @@ public virtual async Task<long> PatchAllAsync(IRepositoryQuery query, IPatchOper
 
                     _logger.LogDebug("Checking script operation task ({TaskId}) status: Created: {Created} Updated: {Updated} Deleted: {Deleted} Conflicts: {Conflicts} Total: {Total}", taskId, status.Created, status.Updated, status.Deleted, status.VersionConflicts, status.Total);
                     var delay = TimeSpan.FromSeconds(attempts <= 5 ? 1 : 5);
-                    await Task.Delay(delay).AnyContext();
+                    await ElasticIndex.Configuration.TimeProvider.Delay(delay).AnyContext();
                 } while (true);
             }
             else