[pgsql] invalid input syntax for type boolean: ""

Bug Report

Q	A
Version	3.9.3

Summary

I usually use $queryBuilder->createNamedParameter($value) to create queries with prepared statements. Even for boolean values. It was never a problem in mysql, mariadb and mssql in my cases years ago. Sometimes I had to add a type as second parameter. pgsql now fails when the value ist false.

Current behavior

When I run one of following code, and the value is false

$queryBuilder->insert(self::TABLE)->values([
    'is_anonymous' => $queryBuilder->createNamedParameter($entity->isAnonymous()),
    // ..
])->executeQuery();

$queryBuilder->insert(self::TABLE)->values([
    'is_anonymous' => $queryBuilder->createNamedParameter($entity->isAnonymous(), ParameterType::BOOLEAN),
    // ..
])->executeQuery();

Following happens

Doctrine\DBAL\Exception\DriverException:
An exception occurred while executing a query: invalid input syntax for type boolean: ""

  at vendor/doctrine/dbal/src/Driver/API/PostgreSQL/ExceptionConverter.php:87
  at Doctrine\DBAL\Driver\API\PostgreSQL\ExceptionConverter->convert(object(Exception), object(Query))
     (vendor/doctrine/dbal/src/Connection.php:1939)
  at Doctrine\DBAL\Connection->handleDriverException(object(Exception), object(Query))
     (vendor/doctrine/dbal/src/Connection.php:1881)
...

After some debugging, I worked around to pass a literal 'false' string.

    private function booleanToLiteral(bool $value): string
    {
        return $value ? 'true' : 'false';
    }

$queryBuilder->insert(self::TABLE)->values([
    'is_anonymous' => $queryBuilder->createNamedParameter($this->booleanToLiteral($entity->isAnonymous())),
    // ..
])->executeQuery();

Expected behavior

The Query should succeed with one of these (without having to do an own conversion).

$queryBuilder->insert(self::TABLE)->values([
    'is_anonymous' => $queryBuilder->createNamedParameter($entity->isAnonymous()),
    // ..
])->executeQuery();

$queryBuilder->insert(self::TABLE)->values([
    'is_anonymous' => $queryBuilder->createNamedParameter($entity->isAnonymous(), ParameterType::BOOLEAN),
    // ..
])->executeQuery();

How to reproduce

See the code snippets.

Further

I searched for this issue and found some related issues, but they didn't talk directly about createNamedParameter: #1847, https://github.com/doctrine/dbal/pull/564, https://github.com/doctrine/dbal/pull/625,