[TF2] Exorcism Halloween spell does not show for the Ullapool Caber gib kills

[FrozenDragon0]

Self-explanatory really, but essentially, if a caber with the Exorcism Halloween spell is used to kill an enemy then the Exorcism ghosts will show as expected, however, if the kill in question was done with the caber's explosion to gib then the effect will not show up at all.

This makes the spell on the weapon inconsistent at times.

[FrozenDragon0]

Specifically whenever a kill reported in console is ullapool_caber_explosion then Exorcism doesn't show up.