Fix in ORM 2.6.3 breaks query execution

[kdambekalns]

Description

The fixed parameter value processing for objects with unloaded metadata in ORM 2.6.3 (doctrine/orm#7471) breaks query execution (in particular cases.)

Actual behavior

When no class schema can be found in loadMetaDataForClass, a ClassSchemaNotFoundException is thrown. This leads to errors like this as of ORM 2.6.3:

FlowAnnotationDriver.php: No class schema found for "some-non-mapped-class".

89 …\FlowAnnotationDriver_Original::getClassSchema("some-non-mapped-class")
88 …\FlowAnnotationDriver_Original::loadMetadataForClass("some-non-mapped-class", Neos\Flow\Persistence\Doctrine\Mapping\ClassMetadata)

Affected Versions

Flow: 5.0.0 and up with doctrine/orm 2.6.3 and up.