Compile cppia host with HXCPP_CATCH_SEGV and ename nullFieldAccess test

tests/unit/compile-cppia-host.hxml

@@ -2,6 +2,7 @@
 -D source-header=''
 -D scriptable
 -D dll_export=bin/cppia.classes
+-D HXCPP_CATCH_SEGV
 --debug
 --dce no
 -cpp bin/cppia

tests/unit/src/unit/TestMisc.hx

@@ -599,10 +599,8 @@ class TestMisc extends Test {
 
 	static var nf1:Base = null;
 	static var nf2:{s:String} = null;
-#if !cppia //see https://github.com/HaxeFoundation/haxe/issues/9261
 	function testNullFieldAccess() {
 		eq("NPE", try nf1.s catch (e:Any) "NPE");
 		eq("NPE", try nf2.s catch (e:Any) "NPE");
 	}
-#end
 }