[DowngradePhp80][DowngradePhp74] Skip already has method_exists check on DowngradeReflectionGetAttributesRector + DowngradeReflectionGetTypeRector

[samsonasik]

Continue of #1530, if already has method_exist, no need to re-check. It currently make repetitive if in ternary:

-        if (method_exists($reflectionClass, 'getAttributes') ? $reflectionClass->getAttributes('someName', 1) : []) {
+        if (method_exists($reflectionClass, 'getAttributes') ? method_exists($reflectionClass, 'getAttributes') ? $reflectionClass->getAttributes('someName', 1) : [] : []) {

which not needed.

[samsonasik]

Fixed 🎉