Show decrypted cookies in debugger [5.3.0-B1]

In INP-1188 - Getting issue details... STATUS we added functionality for encrypting cookie values. This way an attacker won't be able to change existing cookie values or add new cookies. Unfortunately after that in Debugger cookie values are also shown as encrypted.

If debugger is initialized after we've decrypting cookies, then maybe we can store decrypted cookies in $_COOKIE array for Debugger to pick them up.