input handler: force not skip next char event if no input consumer is set

This should fix that you sometimes (eventually when the server force closes an container without any key interaction) need to press ESC twice to pause the game.

src/main/java/de/bixilon/minosoft/gui/rendering/input/key/RenderWindowInputHandler.kt

@@ -282,8 +282,10 @@ class RenderWindowInputHandler(
             keysLastDownTime[keyCode] = currentTime
         }
 
-
-        if (inputHandler != this.inputHandler && this.inputHandler != null) {
+        if (this.inputHandler == null) {
+            skipCharPress = false
+            skipMouseMove = false
+        } else if (inputHandler != this.inputHandler) {
             skipCharPress = true
             skipMouseMove = true
         }