Replace line number reference with descriptive comment

[Copilot]

Comments referencing specific line numbers become misleading when code changes. Found and fixed one instance in the repository.

Change

• src/Cli/dotnet/Commands/Test/MTP/IPC/NamedPipeServer.cs:239: Replaced "line 103" reference with descriptive text

// Before
// To close gracefully we need to ensure that the client closed the stream line 103.

// After  
// To close gracefully we need to ensure that the client closed the stream and the InternalLoopAsync method has exited.

The comment now describes what it's waiting for (the async loop method to exit after detecting client disconnect) rather than referencing a line number that could shift as code evolves.

Original prompt

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This section details on the original issue you should resolve

<issue_title>Any line related comments that aged like milk?</issue_title>
<issue_description>Find all instances of referring to other code by line number or other non descriptive descriptor in this repo, and fix it.</issue_description>

Comments on the Issue (you are @copilot in this section)

• Fixes Any line related comments that aged like milk? #51645

---

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[KalleOlaviNiemitalo]

git grep -P -e '[Ll]ine \d' origin/main doesn't find anything else that looks like it should be changed.

[Copilot]

Pull Request Overview

This PR addresses issue #51645 by replacing a line number reference in a comment with descriptive text, improving code maintainability. Line number references in comments become outdated and misleading as code evolves, making them problematic for future maintenance.

Key Changes:

• Updated comment in NamedPipeServer.cs to describe what the code is waiting for (InternalLoopAsync method exit after client disconnect) instead of referencing "line 103"

[KalleOlaviNiemitalo]

However, git grep -e '#L' origin/main finds stuff like:

origin/main:documentation/project-docs/Localization.md:This is controlled https://github.com/dotnet/sdk/blob/main/eng/pipelines/templates/jobs/sdk-job-matrix.yml#L86 and requires a change both here and in the loc system to align branches.
origin/main:documentation/project-docs/SDK-PR-guide.md:- [ ] Set [`StabilizePackageVersion`](https://github.com/dotnet/sdk/blob/main/eng/Versions.props#L18) to true
origin/main:documentation/project-docs/developer-guide.md:> If you're building main, we may be using a preview version of the SDK to build as specified in [global.json](../../global.json#L3). We only test preview SDKs with the latest Visual Studio previews so would recommend installing the latest preview build. You can see the preview versions we test with [here](https://learn.microsoft.com/en-us/dotnet/core/porting/versioning-sdk-msbuild-vs#preview-versioning)
origin/main:documentation/project-docs/snapshot-based-testing.md:[compare]: ../../test/dotnet.Tests/dotnet.Tests.csproj#L100
origin/main:documentation/project-docs/snapshot-based-testing.md:[update]: ../../test/dotnet.Tests/dotnet.Tests.csproj#L107
origin/main:src/Cli/Microsoft.TemplateEngine.Cli/NewCommandStatus.cs:    ///    https://github.com/dotnet/sdk/blob/main/src/Cli/dotnet/Parser.cs#L148.
origin/main:src/Cli/dotnet/Commands/Test/MTP/Terminal/SystemConsole.cs:        // From https://github.com/dotnet/runtime/blob/main/src/libraries/System.Console/src/System/Console.cs#L236
origin/main:src/Cli/dotnet/SudoEnvironmentDirectoryOverride.cs:        // https://github.com/NuGet/NuGet.Client/blob/dev/src/NuGet.Core/NuGet.Common/PathUtil/NuGetEnvironment.cs#L139
origin/main:src/Microsoft.CodeAnalysis.NetAnalyzers/docs/NetCore_GettingStarted.md:    - Set `RUNTIMEPACKAGEVERSION` variable with a version value whose major part is equal to the major part of the version the [runtime](https://github.com/dotnet/runtime/blob/main/eng/Versions.props#L53)/[roslyn-analyzers](https://github.com/dotnet/roslyn-analyzers/blob/main/eng/Versions.props#L50) repo is using. Example: `set RUNTIMEPACKAGEVERSION=8.0.0`
origin/main:src/Microsoft.CodeAnalysis.NetAnalyzers/src/Utilities/Compiler/Extensions/IOperationExtensions.cs:        // Copied from roslyn https://github.com/dotnet/roslyn/blob/main/src/Workspaces/SharedUtilitiesAndExtensions/Compiler/Core/Extensions/OperationExtensions.cs#L25

I omitted the URLs that link to a specific commit ID or tag.