Fix EntityPushedByEntityAttackEvent not being called for Wind Burst attacks

[cerus]

This resolves #13079. As already noted in the issue comments, the fix is to set attribute_to_user to true in the Wind Burst file.

[electronicboy]

Changing the vanilla definitions of stuff is pretty precarious as this ends up having a bunch of potential side-effects; the ones in this case seemed quesitonable as to the side-effect; This really should be solved in some other manner

[cerus]

While I understand your reasoning, I don't see any other clean way of solving this issue without adding questionable code to the explosion logic. If the risks for potential side effects are too high, it might be better to not fix this at all instead of introducing questionable code for this to the codebase.