feat(ui): add Node column + filter to AuditLog grid

tests/ScadaLink.IntegrationTests/AuditLog/SiteAuditPushFlowTests.cs

@@ -100,6 +100,9 @@ public class SiteAuditPushFlowTests : TestKit
         public Task<IReadOnlyList<ExecutionTreeNode>> GetExecutionTreeAsync(
             Guid executionId, CancellationToken ct = default)
             => throw new NotSupportedException();
+
+        public Task<IReadOnlyList<string>> GetDistinctSourceNodesAsync(CancellationToken ct = default)
+            => throw new NotSupportedException();
     }
 
     private static AuditEvent NewPendingEvent(Guid id) => new()