MariaDbPoolDataSource leaks connections when the mariadb server restarts

When an active MariaDbConnection fails (e.g. mariadb server restarts), the MariaDbPoolDataSource does not decrement Pool.totalConnection.
Consequently Pool.getConnection() may fail thinking the pool is full.

I test with the MariaDB Connector/J versions 2.4.4 and 2.7.3
The error is slightly different between these two versions but the behavior is the same.

2.4.4: When the connection fails, executeQuery calls fireConnectionErrorOccured.
Unfortunately the connectionErrorOccurred decrements Pool.totalConnection only if the connection is already in the idleConnections queue

2.7.3: MariaDbConnection.close() tries to rollback the transaction but it fails and throws an exception.
The connectionErrorOccurred method is never called.

See MariaDbPoolDataSourceTest.java and output_***.txt to reproduce the issue.

Thank you