[Phpunit] Some rectors throw exception when encountering method calls

[Bl00D4NGEL]

Bug Report

Subject	Details
Rector version	Rector 0.9.29
Installed as	prefixed Rector

A few phpunit rectors do not seem to be able to handle method calls and instead throw an \Rector\Core\Exception\ShouldNotHappenException with the message Name called on "PhpParser\Node\Expr\MethodCall" is not possible. Use $this->getName($node->name) instead
These include but may not be limited to:

• AssertTrueFalseToSpecificMethodRector
• AssertFalseStrposToContainsRector
• AssertPropertyExistsRector

Minimal PHP Code Causing Issue

https://getrector.org/demo/e3abd896-bd98-4f5a-ad71-dc097a1cbdd3

Expected Behaviour

The rector does not throw an exception and also does not change the code (similar to how the named rectors already skip static methods)