Enable HTTP/3 stress on Windows

[CarnaViire]

Previously, we run HTTP/3 stress tests only on Linux, because Windows containers did not support TLS 1.3.
It should support TLS 1.3 now, so we should enable HttpStress tests there as well.

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Issue Details

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Previously, we run HTTP/3 stress tests only on Linux, because Windows containers did not support TLS 1.3.
It should support TLS 1.3 now, so we should enable HttpStress tests there as well.

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