Fix isJsonSupported for MariaDB #904

Job	Run time
Runs PHP-CS-Fixer to check for CS issues, and validates composer.json	21s
Tests PHP 8.2, Symfony 5.*, sqlite	1m 34s
Tests PHP 8.2, Symfony 5.*, mysql	1m 38s
Tests PHP 8.2, Symfony 5.*, pgsql	1m 19s
Tests PHP 8.2, Symfony 6.*, sqlite	1m 16s
Tests PHP 8.2, Symfony 6.*, mysql	1m 47s
Tests PHP 8.2, Symfony 6.*, pgsql	1m 16s
Tests PHP 8.2, Symfony 7.*, sqlite	1m 24s
Tests PHP 8.2, Symfony 7.*, mysql	1m 51s
Tests PHP 8.2, Symfony 7.*, pgsql	1m 29s
Tests PHP 8.3, Symfony 5.*, sqlite	1m 23s
Tests PHP 8.3, Symfony 5.*, mysql	1m 42s
Tests PHP 8.3, Symfony 5.*, pgsql	1m 24s
Tests PHP 8.3, Symfony 6.*, sqlite	1m 13s
Tests PHP 8.3, Symfony 6.*, mysql	1m 48s
Tests PHP 8.3, Symfony 6.*, pgsql	1m 35s
Tests PHP 8.3, Symfony 7.*, sqlite	1m 12s
Tests PHP 8.3, Symfony 7.*, mysql	1m 33s
Tests PHP 8.3, Symfony 7.*, pgsql	1m 27s
Upload coverage to Codecov	7s
	27m 19s

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