[display] skip KAbstractImpl classes for toplevel completion (see #3310)
[display] skip KAbstractImpl classes for toplevel completion (see #3310)

pleclech/hacking-haxe,pleclech/hacking-haxe,pleclech/hacking-haxe,pleclech/hacking-haxe,pleclech/hacking-haxe,pleclech/hacking-haxe