Do Not Throw During Test Clean Up (#3156)

Do not throw when cleaning up tags for test

test/Microsoft.Health.Dicom.Web.Tests.E2E/Common/DicomTagsManager.cs

@@ -5,6 +5,7 @@
 
 using System;
 using System.Collections.Generic;
+using System.Diagnostics.CodeAnalysis;
 using System.Runtime.CompilerServices;
 using System.Threading;
 using System.Threading.Tasks;
@@ -28,11 +29,19 @@ public DicomTagsManager(IDicomWebClient dicomWebClient)
         _tags = new HashSet<string>();
     }
 
+    [SuppressMessage("Design", "CA1031:Do not catch general exception types", Justification = "Do not throw on test clean up.")]
     public async ValueTask DisposeAsync()
     {
-        foreach (var tag in _tags)
+        foreach (string tag in _tags)
         {
-            await DeleteExtendedQueryTagAsync(tag);
+            try
+            {
+                await DeleteExtendedQueryTagAsync(tag);
+            }
+            catch (Exception)
+            {
+                // Dispose should not throw for test clean up
+            }
         }
     }