revert test #8243

tests/unit/src/unit/issues/Issue8243.hx

@@ -3,13 +3,12 @@ package unit.issues;
 class Issue8243 extends unit.Test {
 #if !hl // TODO https://github.com/HaxeFoundation/haxe/issues/8243
 
-	var involveRecursiveAbstractTyping:Null<Rec> = [[[[]]]];
+	var involveRecursiveAbstractTyping:Null<Rec> = null;
 
 	function test() {
-		eq('[[[[]]]]', involveRecursiveAbstractTyping.toString());
+		t(involveRecursiveAbstractTyping == null);
 	}
 #end
 }
 
-@:forward(toString)
 private abstract Rec(Array<Rec>) from Array<Rec> {}