JS: Fix input bugs with window resize. (#1112)

hxd/Window.js.hx

@@ -123,10 +123,10 @@ class Window {
 				checkResize();
 			});
 			observer.observe(canvas);
-		} else {
-			js.Browser.window.addEventListener("resize", checkResize);
 		}
 
+		js.Browser.window.addEventListener("resize", checkResize);
+
 		js.Browser.document.addEventListener("pointerlockchange", onPointerLockChange);
 
 		canvas.addEventListener("contextmenu", function(e){