gh-126255: Ignore warning about JIT being deactivated when perf support is active...

gh-126255: Ignore warning about JIT being deactivated when perf support is active in `test_embed.InitConfigTests.test_initconfig_api` (#126302)

Temporarily ignore warnings about JIT deactivation when perf support is active.
This will be reverted as soon as a way is found to determine at run time whether the interpreter was built with JIT. Currently, this is not possible on Windows.

Co-authored-by: Kirill Podoprigora <kirill.bast9@mail.ru>
Co-authored-by: Ken Jin <28750310+Fidget-Spinner@users.noreply.github.com>
Co-authored-by: Pablo Galindo <pablogsal@gmail.com>