Fix KingBase GetTableNames IndexOutOfRangeException

[Copilot]

KingBaseMetaData.GetTableNames() throws Index was outside the bounds of the array because it accesses dr["Name"] while the underlying SQL aliases the column as TableName.

Change

• KingBase.cs — GetTableNames(): Replace dr["Name"] with dr["TableName"] to match the SQL alias in GetTablesSql

// Before — column "Name" does not exist in result set
var name = $"{dr["Name"]}";

// After — matches the SQL alias: select relname as TableName ...
var name = $"{dr["TableName"]}";

The mismatch caused DbRow.get_Item(string name) to look up a non-existent column, triggering the index-out-of-bounds error as soon as DAL.TableNames was accessed on a KingBase connection (including when using time-sharded tables).