Realign controlKeysFilter with previous behavior for OSX (#968)

Author: Jugen

richtextfx/src/main/java/org/fxmisc/richtext/GenericStyledAreaBehavior.java

@@ -179,8 +179,10 @@ class GenericStyledAreaBehavior {
                 //Note that this is how several IDEs such JetBrains IDEs or Eclipse behave.
                 if (e.isControlDown() && e.isAltDown() && !e.isMetaDown() && e.getCharacter().length() == 1
                 	    && e.getCharacter().getBytes()[0] != 0) return true;
+                
+                return !e.isControlDown() && !e.isAltDown() && !e.isMetaDown();
             }
-        	return !e.isControlDown() && !e.isAltDown() && !e.isMetaDown();
+        	return !e.isControlDown() && !e.isMetaDown();
         };
 
         Predicate<KeyEvent> isChar = e ->