[CodeQuality] Do not replace variable assign on ControllerMethodInjectionToConstructorRector

[samsonasik]

when it re-assign variable from param, the variable assign should be kept, or it will cause error:

Fatal error: Uncaught Error: Cannot modify readonly property

see https://3v4l.org/BpX2t

[samsonasik]

Fixed 🎉 /cc @TomasVotruba

[samsonasik]

All checks have passed 🎉 @TomasVotruba I think it is ready 👍

[TomasVotruba]

Nice edge case 👌