more local #if java for TestInterface

tests/unit/src/unit/TestInterface.hx

@@ -33,7 +33,7 @@ private class Point implements IX implements IY {
 		return x;
 	}
 
-	public function getY() : Int {
+	public function getY() : #if java /* see https://github.com/HaxeFoundation/haxe/issues/6486 */ Float #else Int #end {
 		return y;
 	}
 

tests/unit/src/unit/TestMain.hx

@@ -87,9 +87,7 @@ class TestMain {
 			#if (java || cs)
 			new TestOverloads(),
 			#end
-			#if !java // TODO
 			new TestInterface(),
-			#end
 			new TestNaN(),
 			// #if ((dce == "full") && !interp && !as3)
 			// new TestDCE(),