Check if json_array type exists before unsetting it

[HypeMC]

Fixes #987

[weaverryan]

Looks awesome! Tests are failing hard - but it's related to symfony/flex#820

[HypeMC]

@weaverryan I've fixed the package names, should be ok now.

[weaverryan]

Thanks for the fix and the extra fix with the orm-pack :). Cheers @HypeMC!

[cadot-info]

i share a patch for similar problem :

--- /dev/null
+++ ../PropertyInfo/DoctrineExtractor.php
@@ -280,7 +280,6 @@
 
             case Types::ARRAY:
             case Types::SIMPLE_ARRAY:
-            case Types::JSON_ARRAY:
                 return Type::BUILTIN_TYPE_ARRAY;
         }

apply by composer

 "extra": {
     ...
        "patches": {
            "symfony/doctrine-bridge": [
                "the file.patch"
            ]
        }

...