Fix duplicate pragma warnings and ordering

- Remove duplicate ASPIREPIPELINES001 pragma in playground files
- Reorder pragma warnings to sequential order (001, 002) in test file

Co-authored-by: captainsafia <[email protected]>

Author: Copilot

playground/pipelines/Pipelines.AppHost/AppHost.cs

@@ -1,6 +1,5 @@
 #pragma warning disable ASPIREPIPELINES001
 #pragma warning disable ASPIRECOMPUTE001
-#pragma warning disable ASPIREPIPELINES001
 
 using Aspire.Hosting.Pipelines;
 using Azure.Identity;

playground/pipelines/Pipelines.Library/DistributedApplicationPipelineExtensions.cs

@@ -1,7 +1,6 @@
 #pragma warning disable ASPIREPIPELINES001
 #pragma warning disable ASPIRECOMPUTE001
 #pragma warning disable ASPIREAZURE001
-#pragma warning disable ASPIREPIPELINES001
 
 using System.Diagnostics;
 using System.IO.Compression;

tests/Aspire.Hosting.Tests/Pipelines/DistributedApplicationPipelineTests.cs

@@ -2,8 +2,8 @@
 // The .NET Foundation licenses this file to you under the MIT license.
 
 #pragma warning disable CS0618 // Type or member is obsolete
-#pragma warning disable ASPIREPIPELINES002
 #pragma warning disable ASPIREPIPELINES001
+#pragma warning disable ASPIREPIPELINES002
 #pragma warning disable IDE0005
 
 using System.Diagnostics;