Tech Debt: Manage Input locking properly

[fcolarich]

Currently, our input locking/unlocking is messy, we have a system that should be taking care of it, but its not used everywhere and nevertheless, there is no prio for locking/unlocking, so anyone can lock/unlock at any moment and it makes it much harder to control it.
I was trying to lock input during the loading screen showing, but then when the chat loses focus it enables input so it would nullify it, or when the explore panel closes, it also enables certain inputs, etc., etc.

So we need a more proper way to discern who can lock/unlock input and when.

[fcolarich]

This PR addresses this, but we discussed with Vitaly some more optimizations that can be done, so I will keep this one alive for that :)