Issue description

MigrationExecutor - Query runner already released.

Expected Behavior

getExecutedMigrations() should return array of all executed migrations to indicated dataSource.

Actual Behavior

MigrationExecutor is just throwing QueryRunnerAlreadyReleasedError when you attempt to run getExecutedMigrations().

QueryRunnerAlreadyReleasedError: Query runner already released. Cannot run queries anymore.
at MysqlQueryRunner.query (C:\project\node_modules\typeorm\src\driver\mysql\MysqlQueryRunner.ts:187:36)
at SelectQueryBuilder.loadRawResults (C:\project\node_modules\src\query-builder\SelectQueryBuilder.ts:3789:43)
at SelectQueryBuilder.getRawMany (C:\project\node_modules\src\query-builder\SelectQueryBuilder.ts:1626:40)
at MigrationExecutor.loadExecutedMigrations (C:\project\node_modules\src\migration\MigrationExecutor.ts:563:18)
at C:\project\node_modules\src\migration\MigrationExecutor.ts:106:31
at processTicksAndRejections (node:internal/process/task_queues:95:5)

There is the problem:
After internal await this.createMigrationsTableIfNotExist(queryRunner); the queryRunner is realizing and still used for next operation.

Steps to reproduce

const migrationExecutor = new MigrationExecutor(dataSource);

// Get the list of executed migrations
const executedMigrations = await migrationExecutor.getExecutedMigrations();

My Environment

Additional Context

No response

Relevant Database Driver(s)

• aurora-mysql
• aurora-postgres
• better-sqlite3
• cockroachdb
• cordova
• expo
• mongodb
• mysql
• nativescript
• oracle
• postgres
• react-native
• sap
• spanner
• sqlite
• sqlite-abstract
• sqljs
• sqlserver

Are you willing to resolve this issue by submitting a Pull Request?

Yes, I have the time, and I know how to start.