Restore FocusFinder.java from working version f79eed5

Author: baich110

app/src/main/java/com/example/simplereader/utils/FocusFinder.java

@@ -4,10 +4,10 @@
 import androidx.core.view.accessibility.AccessibilityNodeInfoCompat;
 
 public class FocusFinder {
-    private AccessibilityNodeInfo findFocusInternal(int direction) { return null; }
+    private android.view.accessibility.AccessibilityNodeInfo findFocusCompat(int direction) { return null; }
 
     public AccessibilityNodeInfoCompat findFocusCompat(int focusType) {
-        AccessibilityNodeInfo info = findFocusInternal(focusType);
+        android.view.accessibility.AccessibilityNodeInfo info = findFocusCompat(focusType);
         if (info != null) return AccessibilityNodeInfoCompat.wrap(info);
         return null;
     }