1. Fixes

2. 

3. ### Context
- In-proc node thread names omitted the node identifier, making thread
identification harder when multiple nodes run under the same host.

4. ### Changes Made
- Updated `NodeProviderInProc` to embed `nodeId` in the thread name when
spinning up an in-proc node thread:
- `nodeContext._inProcNodeThread.Name = $"In-proc Node {nodeId}
({_componentHost.Name})";`

Example:
```csharp
// Thread name now clearly identifies the node:
"In-proc Node 3 (BackEnd.MockHost)"
```

5. ### Testing
- Build succeeded: `./build.sh -v quiet`
- Bootstrapped environment and verified SDK: `source
artifacts/sdk-build-env.sh && dotnet --version`
- Sample build: `dotnet build src/Samples/Dependency/Dependency.csproj`
- Targeted tests (known existing failures remain unrelated): `dotnet
test src/Build.UnitTests/Microsoft.Build.Engine.UnitTests.csproj -m:1`

6. ### Notes
- Targeted test run reports pre-existing failures in BinaryLogger
roundtrip and ProjectGraph target list expectations; no changes made to
those areas in this PR.

> [!WARNING]
>
> <details>
> <summary>Firewall rules blocked me from connecting to one or more
addresses (expand for details)</summary>
>
> #### I tried to connect to the following addresses, but was blocked by
firewall rules:
>
> - `dnceng.pkgs.visualstudio.com`
> - Triggering command:
`/home/REDACTED/work/msbuild/msbuild/artifacts/bin/bootstrap/core/dotnet
dotnet build src/Samples/Dependency/Dependency.csproj` (dns block)
> - Triggering command:
`/home/REDACTED/work/msbuild/msbuild/artifacts/bin/bootstrap/core/dotnet
dotnet test src/Build.UnitTests/Microsoft.Build.Engine.UnitTests.csproj
-m:1` (dns block)
>
> If you need me to access, download, or install something from one of
these locations, you can either:
>
> - Configure [Actions setup
steps](https://gh.io/copilot/actions-setup-steps) to set up my
environment, which run before the firewall is enabled
> - Add the appropriate URLs or hosts to the custom allowlist in this
repository's [Copilot coding agent
settings](https://github.com/dotnet/msbuild/settings/copilot/coding_agent)
(admins only)
>
> </details>

<!-- START COPILOT CODING AGENT SUFFIX -->



<!-- START COPILOT ORIGINAL PROMPT -->



<details>

<summary>Original prompt</summary>

> On NodeProviderInProc.cs:373-373, add {nodeId} to this name


</details>



<!-- START COPILOT CODING AGENT TIPS -->
---

💡 You can make Copilot smarter by setting up custom instructions,
customizing its development environment and configuring Model Context
Protocol (MCP) servers. Learn more [Copilot coding agent
tips](https://gh.io/copilot-coding-agent-tips) in the docs.

---------

Co-authored-by: copilot-swe-agent[bot] <[email protected]>
Co-authored-by: JanProvaznik <[email protected]>