Use request stack service for super globals $_POST

@swatichouhan012 thank you very much, but could you please update the issue summary with details, why this should be done and where this is documented?

Tests look good. Also it would be better to have this as MR against 3.x and 4.x

As of https://symfony.com/doc/current/introduction/http_fundamentals.html the solution is correct, we please need some community feedback, if this works, then we can merge it soon.

Tested the patch again!

Thanks @Roderik de Langen merged! :)

Automatically closed - issue fixed for 2 weeks with no activity.