fix(DB/GO): chest pooling to battered chests in Jangolade Mine (#7053)

- Closes #6458

data/sql/updates/pending_db_world/rev_1626826866431944500.sql

@@ -0,0 +1,41 @@
+INSERT INTO `version_db_world` (`sql_rev`) VALUES ('1626826866431944500');
+
+-- Remove the nodes from any existing nodes then add them to their distinct pool
+
+-- JM = Jangolode Mine
+
+SET
+@POOL_ENTRY_JM = 11670,
+@POOL_SIZE = 1,
+@CHANCE = 0,
+@RESPAWN = 3600,
+@POOL_DESCRIPTION_JM = 'Battered Chests - Jangolode Mine';
+
+-- Create temp table with pool entries
+CREATE TABLE TEMP_POOL_ENTRIES (guid int, pool_entry int, description char(64));
+INSERT INTO TEMP_POOL_ENTRIES VALUES 
+(42718, @POOL_ENTRY_JM, 'Battered Chest, Jangolode Mine, Node 1'),
+(85887, @POOL_ENTRY_JM, 'Battered Chest, Jangolode Mine, Node 2'),
+(42739, @POOL_ENTRY_JM, 'Battered Chest, Jangolode Mine, Node 3');
+
+-- General Winterspring Zone
+DELETE FROM `pool_template` WHERE `entry` IN (SELECT DISTINCT `pool_entry` FROM TEMP_POOL_ENTRIES);
+
+
+INSERT INTO `pool_template` (`entry`,`max_limit`,`description`) VALUES
+(@POOL_ENTRY_JM, @POOL_SIZE, @POOL_DESCRIPTION_JM);
+
+
+-- Delete from any existing pools
+DELETE FROM `pool_gameobject` WHERE `guid` IN (SELECT `guid` FROM TEMP_POOL_ENTRIES);
+
+-- Add to new pool
+INSERT INTO `pool_gameobject`
+(`guid`, `pool_entry`, `chance`, `description`) 
+SELECT `guid`, `pool_entry`, @CHANCE, `description` FROM TEMP_POOL_ENTRIES;
+
+-- Set spawn time
+UPDATE `gameobject` SET `spawntimesecs` = @RESPAWN WHERE `guid` IN (SELECT `guid` FROM TEMP_POOL_ENTRIES);
+
+-- Drop temp table
+DROP TABLE TEMP_POOL_ENTRIES;