[Bug] [php2cpg] call do not resolve to parent class method when child class do not have overload method

[vigov5]

Describe the bug
I have this minimal example where Joern can't resolve the call from child class B to the function in parent class A when class B does not have an overloaded method.

To Reproduce

<?php

class A
{
    public static function test($x)
    {
        echo $x;
    }
}

class B extends A
{
}

B::test("hello");

Shell result:

joern> cpg.call.name("test").head.callOut.l
val res5: List[io.shiftleft.codepropertygraph.generated.nodes.Method] = List(
  Method(
    astParentFullName = "<global>",
    astParentType = "NAMESPACE_BLOCK",
    code = "<empty>",
    columnNumber = None,
    columnNumberEnd = None,
    filename = "<empty>",
    fullName = "B::test",
    hash = None,
    isExternal = true,
    lineNumber = None,
    lineNumberEnd = None,
    name = "test",
    offset = None,
    offsetEnd = None,
    order = 0,
    signature = "<unresolvedSignature>(1)"
  )
)

Expected behavior
If the method is not found in the current class, the frontend can look up the same one in parent classes (if possible)