[mt248] Don't scale SPELL_EFFECT_WMO_DAMAGE with level

Signed-off-by: Yaki Khadafi <elsoldollo@gmail.com>
[mt249] Divine Guardian, Exorcism coefficient

Signed-off-by: Yaki Khadafi <elsoldollo@gmail.com>
[mt250] Zealotry, Inquisition

Signed-off-by: Yaki Khadafi <elsoldollo@gmail.com>
[mt251] Guarded by the Light

Signed-off-by: Yaki Khadafi <elsoldollo@gmail.com>
[mt252] Ardent Defender