[Cherry-pick] Add warnings checks for v2 namespaces

[NicolasHug]

cherry-pick of #7288

[pmeier]

Stamp

[NicolasHug]

Tests are failing because a simple import torchvision is causing the following warning on 3.10:

2023-02-21T16:23:50.6442709Z Error: mkl-service + Intel(R) MKL: MKL_THREADING_LAYER=INTEL is incompatible with libgomp.so.1 library.
2023-02-21T16:23:50.6443298Z 	Try to import numpy first or set the threading layer accordingly. Set MKL_SERVICE_FORCE_INTEL to force it.

This is something that should be fixed before the release, but this PR is not the cause of the failure (this PR actually makes this problem visible, which is a very good thing. Merging).