System.Net.Sockets.Tests tests fail with ObjectDisposedException

## Build Information
Build: https://dev.azure.com/dnceng-public/public/_build/results?buildId=1512502
Build error leg or test failing: System.Net.Sockets.Tests.WorkItemExecution
Pull request: https://github.com/dotnet/runtime/pull/126006

## Error Message

Fill the error message using [step by step known issues guidance](https://github.com/dotnet/arcade/blob/main/Documentation/Projects/Build%20Analysis/KnownIssueJsonStepByStep.md).

```json
{
"ErrorMessage": ["System.Net.Sockets.Tests", "ObjectDisposedException", "System.Net.Sockets.SafeSocketHandle"],
"ErrorPattern": "",
"BuildRetry": false,
"ExcludeConsoleLog": false
}
```
[net11.0-osx-Debug-x64-Mono_Minijit_Debug-OSX.15.Amd64.Open](https://dev.azure.com/dnceng-public/cbb18261-c48f-4abb-8651-8cdcb5474649/_build/results?buildId=1353912&view=ms.vss-test-web.build-test-results-tab&runId=37835210&resultId=216619)
```
Starting: System.Net.Sockets.Tests (parallel test collections = on [2 threads], stop on fail = off)
[ERROR] FATAL UNHANDLED EXCEPTION: System.ObjectDisposedException: Cannot access a disposed object.
Object name: 'System.Net.Sockets.SafeSocketHandle'.
at System.Runtime.InteropServices.SafeHandle.DangerousAddRef(Boolean& success) in /_/src/libraries/System.Private.CoreLib/src/System/Runtime/InteropServices/SafeHandle.cs:line 165
at System.Runtime.InteropServices.Marshalling.SafeHandleMarshaller`1.ManagedToUnmanagedIn[[System.Runtime.InteropServices.SafeHandle, System.Private.CoreLib, Version=11.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e]].FromManaged(SafeHandle handle) in /_/src/libraries/System.Private.CoreLib/src/System/Runtime/InteropServices/Marshalling/SafeHandleMarshaller.cs:line 32
at Interop.Sys.Fcntl.SetIsNonBlocking(SafeHandle fd, Int32 isNonBlocking) in /_/artifacts/obj/System.Net.Sockets/Debug/net11.0-unix/Microsoft.Interop.LibraryImportGenerator/Microsoft.Interop.LibraryImportGenerator/LibraryImports.g.cs:line 314
at System.Net.Sockets.SocketAsyncContext.SetHandleBlocking() in /_/src/libraries/System.Net.Sockets/src/System/Net/Sockets/SocketAsyncContext.Unix.cs:line 1386
at System.Net.Sockets.SafeSocketHandle.SetBlocking() in /_/src/libraries/System.Net.Sockets/src/System/Net/Sockets/SafeSocketHandle.Unix.cs:line 154
at System.Net.Sockets.SocketAsyncContext.ConnectOperation.InvokeCallback(Boolean allowPooling) in /_/src/libraries/System.Net.Sockets/src/System/Net/Sockets/SocketAsyncContext.Unix.cs:line 681
at System.Net.Sockets.SocketAsyncContext.OperationQueue`1[[System.Net.Sockets.SocketAsyncContext.WriteOperation, System.Net.Sockets, Version=11.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a]].ProcessAsyncOperation(WriteOperation op) in /_/src/libraries/System.Net.Sockets/src/System/Net/Sockets/SocketAsyncContext.Unix.cs:line 1027
at System.Net.Sockets.SocketAsyncContext.ProcessAsyncWriteOperation(WriteOperation op) in /_/src/libraries/System.Net.Sockets/src/System/Net/Sockets/SocketAsyncContext.Unix.cs:line 1468
at System.Net.Sockets.SocketAsyncContext.WriteOperation.System.Threading.IThreadPoolWorkItem.Execute() in /_/src/libraries/System.Net.Sockets/src/System/Net/Sockets/SocketAsyncContext.Unix.cs:line 347
at System.Net.Sockets.SocketAsyncContext.AsyncOperation.Process() in /_/src/libraries/System.Net.Sockets/src/System/Net/Sockets/SocketAsyncContext.Unix.cs:line 291
at System.Net.Sockets.SocketAsyncContext.HandleEvents(SocketEvents events) in /_/src/libraries/System.Net.Sockets/src/System/Net/Sockets/SocketAsyncContext.Unix.cs:line 2302
at System.Net.Sockets.SocketAsyncEngine.System.Threading.IThreadPoolWorkItem.Execute() in /_/src/libraries/System.Net.Sockets/src/System/Net/Sockets/SocketAsyncEngine.Unix.cs:line 279
at System.Threading.ThreadPoolWorkQueue.Dispatch() in /_/src/libraries/System.Private.CoreLib/src/System/Threading/ThreadPoolWorkQueue.cs:line 950
at System.Threading.PortableThreadPool.WorkerThread.WorkerDoWork(PortableThreadPool threadPoolInstance) in /_/src/libraries/System.Private.CoreLib/src/System/Threading/PortableThreadPool.WorkerThread.cs:line 145
at System.Threading.PortableThreadPool.WorkerThread.WorkerThreadStart() in /_/src/libraries/System.Private.CoreLib/src/System/Threading/PortableThreadPool.WorkerThread.cs:line 121
at System.Threading.Thread.StartHelper.RunWorker() in /_/src/libraries/System.Private.CoreLib/src/System/Threading/Thread.cs:line 90
```

### Known issue validation
**Build: :mag_right:** https://dev.azure.com/dnceng-public/public/_build/results?buildId=1512502
**Error message validated:** `[System.Net.Sockets.Tests ObjectDisposedException System.Net.Sockets.SafeSocketHandle`]
**Result validation:** :white_check_mark: Known issue matched with the provided build.
**Validation performed at:** 7/17/2026 11:25:31 AM UTC

### Report
#### Summary
|24-Hour Hit Count|7-Day Hit Count|1-Month Count|
|---|---|---|
|0|0|0|

### Report

|Build|Repository|Test|Pull Request|
|---|---|---|---|
|[1512502](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1512502)|dotnet/runtime|[System.Net.Sockets.Tests.WorkItemExecution](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1512502&view=ms.vss-test-web.build-test-results-tab&runId=41677510&resultId=228819)|dotnet/runtime#130416|
#### Summary
|24-Hour Hit Count|7-Day Hit Count|1-Month Count|
|---|---|---|
|1|1|1|

### Report

|Build|Repository|Test|Pull Request|
|---|---|---|---|
|[1595579](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1595579)|dotnet/runtime|[System.Net.Sockets.Tests.WorkItemExecution](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1595579&view=ms.vss-test-web.build-test-results-tab&runId=44053278&resultId=165136)|dotnet/runtime#133599|
|[1592269](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1592269)|dotnet/runtime|[System.Net.Sockets.Tests.WorkItemExecution](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1592269&view=ms.vss-test-web.build-test-results-tab&runId=43953258&resultId=143194)|dotnet/runtime#133413|
|[1591631](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1591631)|dotnet/runtime|[System.Net.Sockets.Tests.WorkItemExecution](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1591631&view=ms.vss-test-web.build-test-results-tab&runId=43933820&resultId=155542)|dotnet/runtime#133599|
|[1590382](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1590382)|dotnet/runtime|[System.Net.Sockets.Tests.WorkItemExecution](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1590382&view=ms.vss-test-web.build-test-results-tab&runId=43898030&resultId=128965)|dotnet/runtime#132953|
|[1589850](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1589850)|dotnet/runtime|[System.Net.Sockets.Tests.WorkItemExecution](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1589850&view=ms.vss-test-web.build-test-results-tab&runId=43882326&resultId=156611)|dotnet/runtime#132687|
|[1571232](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1571232)|dotnet/runtime|[System.Net.Sockets.Tests.WorkItemExecution](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1571232&view=ms.vss-test-web.build-test-results-tab&runId=43266798&resultId=231063)|dotnet/runtime#132852|
|[1560289](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1560289)|dotnet/runtime|[System.Net.Sockets.Tests.WorkItemExecution](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1560289&view=ms.vss-test-web.build-test-results-tab&runId=42951682&resultId=231014)|dotnet/runtime#132550|
|[1556741](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1556741)|dotnet/runtime|[System.Net.Sockets.Tests.WorkItemExecution](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1556741&view=ms.vss-test-web.build-test-results-tab&runId=42844496&resultId=227805)|dotnet/runtime#132453|
#### Summary
|24-Hour Hit Count|7-Day Hit Count|1-Month Count|
|---|---|---|
|1|5|8|