ODE (Safe handle has been closed) after IApplicationLifetime.ApplicationStopping callback is called on HttpSysServer

### Describe the bug
An object disposed exception is thrown after executing IApplicationLifetime.ApplicationStopping's registered callback on HttpSysServer

### To Reproduce
This appears to be race condition during application shutdown, I'm not able to provide a minimal/consistent repro at this point. Will update the issue if I can find a consistent repro.

### Exceptions (if any)

ProcessRequestAsync

```
Exception:
System.ObjectDisposedException: Safe handle has been closed.
Object name: 'SafeHandle'.
at System.StubHelpers.StubHelpers.SafeHandleAddRef(SafeHandle pHandle, Boolean& success) in System.Private.CoreLib.dll:token 0x6003926+0xc
at Microsoft.AspNetCore.Server.HttpSys.HttpApi.HttpSendHttpResponse(SafeHandle requestQueueHandle, UInt64 requestId, UInt32 flags, HTTP_RESPONSE_V2* pHttpResponse, HTTP_CACHE_POLICY* pCachePolicy, UInt32* pBytesSent, IntPtr pReserved1, UInt32 Reserved2, SafeNativeOverlapped pOverlapped, IntPtr pLogData)
at Microsoft.AspNetCore.Server.HttpSys.Response.SendHeaders(HTTP_DATA_CHUNK[] dataChunks, ResponseStreamAsyncResult asyncResult, HTTP_FLAGS flags, Boolean isOpaqueUpgrade) in Microsoft.AspNetCore.Server.HttpSys.dll:token 0x600036b+0x262
at Microsoft.AspNetCore.Server.HttpSys.ResponseBody.FlushInternal(Boolean endOfRequest, ArraySegment`1 data) in Microsoft.AspNetCore.Server.HttpSys.dll:token 0x6000386+0x152
at Microsoft.AspNetCore.Server.HttpSys.ResponseBody.Dispose(Boolean disposing) in Microsoft.AspNetCore.Server.HttpSys.dll:token 0x600039a+0x2e
at System.IO.Stream.Close() in System.Private.CoreLib.dll:token 0x6005cc6+0x0
at Microsoft.AspNetCore.Server.HttpSys.Response.Dispose() in Microsoft.AspNetCore.Server.HttpSys.dll:token 0x6000365+0x22
at Microsoft.AspNetCore.Server.HttpSys.RequestContext.CompleteAsync() in Microsoft.AspNetCore.Server.HttpSys.dll:token 0x60002eb+0x12d
at Microsoft.AspNetCore.Server.HttpSys.RequestContext`1.ExecuteAsync() in Microsoft.AspNetCore.Server.HttpSys.dll:token 0x6000316+0x36d
at Microsoft.AspNetCore.Server.HttpSys.RequestContext`1.ExecuteAsync() in Microsoft.AspNetCore.Server.HttpSys.dll:token 0x6000316+0x36d
```

### Further technical details
- ASP.NET Core version : NET 6.0, preview 7
- Include the output of `dotnet --info`
- The IDE (VS / VS Code/ VS4Mac) you're running on, and its version