array_merge replacement when having functions as arguments

[LiborStransky]

Bug Report

Subject	Details
Rector version	v0.7.22
Installed as	composer dependency

replacing array_merge(x(), y()). where both methods return arrays with string keys results in:
[...y(), ...x()]; which is causing fatal error.

Minimal PHP Code Causing Issue

https://getrector.org/demo/9c4012b9-6ec1-451f-ac1e-b0e042afd27f#result

See https://3v4l.org/RCsYZ

Expected Behaviour

I think rector should skip that case in the solution is not easy.

[TomasVotruba]

Could you send failing test case to that rule?

[LiborStransky]

not sure what exactly you want from me. these examples are not enough? thx

[TomasVotruba]

Pull request with failing test.