Fix percentage HOTs proccing everything

Unforeseen sideeffect of 057169c21c141f690891c908b8f09e63d917289d
Percentage HOTs are not supposed to proc anything at all.
Closes: https://github.com/TrinityCore/TrinityCore/issues/11914

(cherry picked from commit 1719e19572bc22463edbcbe4089e68a97019e787)
Merge pull request #5 from TrueWoW/master

Fix percentage HOTs proccing everything