Bug: Cost Reduction/Permission is using wrong player when card is not cast by its owner

#11165 uncovered a bunch of bugged interaction between cards that allow to cast cards owned by another player (like [[Gonti, Lord of Luxury]]) and cost reduction/permission that is checking/counting something depending on who the caster is.

Some of the impacted cards:
- cost modification (variable or not) depending on who "you" is: [[The Great Henge]] [[Ghalta, Primal Hunger]] and other. But [[Academy Journeymage]] is also not checking if there is a wizard for the caster, but the card's owner instead.
- restriction that care about what you control/own. For instance the legendary sorcery/instant can not currently be cast with Gonti if the card's owner does not control a legend.

A few of other cards that were confirmed bugged [[Animist's Might]] [[Blizzard]] [[Jaya's Immolating Inferno]]
A few I did not test, but no reason to suspect they are not bugged too: [[Bedlam Reveler]] [[Dargo, the Shipwrecker]] [[Korvold, Gleeful Glutton]] [[Serra Avenger]]