fix(Scripts/Spells): Shadowburn should give Sould Shard only if targe… (#12030)

...t yields experience/honor to the player.

Fixes #12021

data/sql/updates/pending_db_world/rev_1655034493544919400.sql

@@ -0,0 +1,4 @@
+--
+DELETE FROM `spell_script_names` WHERE `spell_id`=29341;
+INSERT INTO `spell_script_names` VALUES
+(29341,'spell_warl_shadowburn');