Fix fx schematic display issues (#2407)
    
    * Fix fx node display issues

    

    * Undo computePos changes

    

    * Fix macroFx editor content placement

    

    * Fix unconnected node and children placement

    

    *  Improved macro node placement

    

    * Fix new macroFx node placement

    

    * Fix loaded preset macro nodes placement

    

    * Fix open and closed macroFx positioning