Socket.ReceiveMessageFrom(saea) does not respect buffer offset on Windows

[antonfirsov]

Discovered in #46285 (comment), to reproduce it's enough to modify the test case to use offset as it has been done in the PR, so it passes an offset to SocketAsyncEventArgs.SetBuffer()

The modified EAP case fails on Windows, but passes on Linux.

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Issue Details

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Discovered in #46285 (comment), to reproduce it's enough to modify the test case as it was done in the PR.

The test fails on Windows, but passes on Linux.

Author:	antonfirsov
Assignees:	-
Labels:	area-System.Net, untriaged
Milestone:	-

Tagging subscribers to this area: @dotnet/ncl
See info in area-owners.md if you want to be subscribed.

Issue Details

---

Discovered in #46285 (comment), to reproduce it's enough to modify the test case as it was done in the PR.

The modified EAP case fails on Windows, but passes on Linux.

Author:	antonfirsov
Assignees:	-
Labels:	area-System.Net.Sockets, untriaged
Milestone:	-