Fixed jumping rows when updating data in Gateway Logs table

ui-ngx/src/app/modules/home/components/widget/lib/gateway/gateway-logs.component.html

@@ -21,7 +21,7 @@
      [active]="activeLink.name === link.name"> {{ link.name }} </a>
 </nav>
 <mat-tab-nav-panel #tabPanel></mat-tab-nav-panel>
-<table mat-table [dataSource]="dataSource"
+<table mat-table [dataSource]="dataSource" [trackBy]="trackByLogTs"
        matSort [matSortActive]="pageLink.sortOrder.property" [matSortDirection]="pageLink.sortDirection()"
        matSortDisableClear>
   <ng-container matColumnDef="ts">

ui-ngx/src/app/modules/home/components/widget/lib/gateway/gateway-logs.component.ts

@@ -164,6 +164,10 @@ export class GatewayLogsComponent implements AfterViewInit {
     }
   }
 
+  trackByLogTs(_: number, log: GatewayLogData): number {
+    return log.ts;
+  }
+
   private changeSubscription() {
     if (this.ctx.datasources && this.ctx.datasources[0].entity && this.ctx.defaultSubscription.options.datasources) {
       this.ctx.defaultSubscription.options.datasources[0].dataKeys = [{
@@ -178,5 +182,4 @@ export class GatewayLogsComponent implements AfterViewInit {
       };
     }
   }
-
 }