sm8250-common: KeyHandler: Do nothing when action != ACTION_DOWN

This makes sure we only change the ringer mode / play haptics once.

Change-Id: Ie5a6050338cee75cd8fe6da6edfae03141263033

KeyHandler/src/org/lineageos/settings/device/KeyHandler.java

@@ -50,6 +50,10 @@ public class KeyHandler implements DeviceKeyHandler {
     }
 
     public KeyEvent handleKeyEvent(KeyEvent event) {
+        if (event.getAction() != KeyEvent.ACTION_DOWN) {
+            return event;
+        }
+
         int scanCode = event.getScanCode();
 
         switch (scanCode) {