Ensure proper cleanup of the database connection in createSchema (#5315)

* Ensure proper cleanup of the database connection in `createSchema` method in `MySQLRecordManager`.

* Update MySQLrecordManager.ts

* Refactor createSchema to optimize dataSource usage

Refactor createSchema method to avoid duplicate dataSource retrieval.

* Refactor createSchema method for efficiency

Refactor createSchema to avoid redundant dataSource retrieval.

---------

Co-authored-by: Henry Heng <henryheng@flowiseai.com>

packages/components/nodes/recordmanager/PostgresRecordManager/PostgresRecordManager.ts

@@ -222,8 +222,8 @@ class PostgresRecordManager implements RecordManagerInterface {
     }
 
     async createSchema(): Promise<void> {
+        const dataSource = await this.getDataSource()
         try {
-            const dataSource = await this.getDataSource()
             const queryRunner = dataSource.createQueryRunner()
             const tableName = this.sanitizeTableName(this.tableName)
 
@@ -251,6 +251,8 @@ class PostgresRecordManager implements RecordManagerInterface {
                 return
             }
             throw e
+        } finally {
+            await dataSource.destroy()
         }
     }