Ensure recycled APN preferences are updated to show radio button

BUG: 17516352
Change-Id: I5da19b7c6d5a3ec03fe24f7bdfda656d6d616342
diff --git a/src/com/android/settings/ApnPreference.java b/src/com/android/settings/ApnPreference.java
index addb695..1e29d22 100644
--- a/src/com/android/settings/ApnPreference.java
+++ b/src/com/android/settings/ApnPreference.java
@@ -71,6 +71,7 @@
                 mProtectFromCheckedChange = true;
                 rb.setChecked(isChecked);
                 mProtectFromCheckedChange = false;
+                rb.setVisibility(View.VISIBLE);
             } else {
                 rb.setVisibility(View.GONE);
             }