MariadbJsonFunctionNode checks instance of MySQLPlatform NOT MariaDBPlatform

[w3sami]

so obvioously i cant get any json function to work with maria like this (symfony 7)

[annervisser]

This is due to a change in doctrine/dbal that we missed and didn't account for.
Should be fixed once #114 is merged and released

[Hikariii]

@w3sami This is fixed in 6.1.0 by #114