`SQLFilter` gives an unclear error when using non-`Stringable` parameters

[7-zete-7]

Bug Report

Q	A
Version	~3

Summary

In ORM 2, parameters were converted according to the DBAL types passed with the parameters. In ORM 3 (after #9727), parameters began to be explicitly converted to a string.

Current behavior

Error while explicitly converting to string.

Expected behavior

Converting specified parameters according to the passed types.

Reproducer: https://github.com/7-zete-7/doctrine-orm-reproducer-1

[critical] Uncaught PHP Exception Error: "Object of class Symfony\Component\Clock\DatePoint could not be converted to string" at SQLFilter.php line 109