Android: Remove NoSuchMethodException error

CleanUp NoSuchMethodException error appears on application start up.

Error appears after commit:
e402e1103b

Fixes: QTBUG-92885
Change-Id: Idd4d09e51c8c721ad18f9bd396c990b51cd730e7
Reviewed-by: Assam Boudjelthia <assam.boudjelthia@qt.io>

src/android/java/src/org/qtproject/qt/android/bindings/QtActivity.java

@@ -1136,4 +1136,9 @@ public class QtActivity extends Activity
     {
         QtNative.activityDelegate().notifyObjectFocus(viewId);
     }
+
+    public boolean isKeyboardVisible()
+    {
+        return QtNative.activityDelegate().isKeyboardVisible();
+    }
 }