All checks have passed 🎉 @TomasVotruba it is ready for review.

It seems will buggy on target node already changed by other rule, I willa dd failing test case.

I added failing test case if target node changed by other node with same type

Add new add skipped_by_rector_rule attribute seems the solution.

It seems not working if node just reprinted:

        if ($node->value === 'Rector\Tests\Php55\Rector\String_\StringClassNameToClassConstantRector\Source\SomeUser') {
            $node->value = 'Rector\Config\RectorConfig';
            $node->setAttribute(AttributeKey::ORIGINAL_NODE, null);
            return $node;

It got:

1) Rector\Core\Tests\Issues\StringClassNameConstantDefaultValue\StringClassNameConstantDefaultValueTest::test with data set #0
Failed on fixture file "in_array_constant_with_undefined_variable.php.inc"
Failed asserting that string matches format description.
--- Expected
+++ Actual
@@ @@
 final class InArrayConstantWithUndefinedVariable
 {
     const SKIP_TYPES = [
-       'Rector\Config\RectorConfig'
+       \Rector\Config\RectorConfig::class
     ];

I add failing test case node just reprinted

It seems traversing can't scan a node that doesn't have origNode attribute via reprint:

$node->setAttribute(AttributeKey::ORIGINAL_NODE, null);

so it doesn't have the information, that's why it still apply the changes if below node is reprinted.

closing for now as too many conflict and requires rework