Scripts/Spells: properly fixed Nature's Grace proc cooldown

sql/updates/world/4.3.4/2025_06_20_03_world.sql

@@ -0,0 +1,3 @@
+DELETE FROM `spell_script_names` WHERE `ScriptName`= 'spell_dru_natures_grace';
+INSERT INTO `spell_script_names` (`spell_id`, `ScriptName`) VALUES
+(-16880, 'spell_dru_natures_grace');