DO NOT MERGE Don't hide approved NLSes in Settings

Note that an NLS that shouldn't be approvable (because its name is too long) but was already approved (either before the max length check was introduced, or through other means) will disappear from the list if the user revokes its access. This might be somewhat confusing, but since this is a very-edge case already it's fine.

Bug: 282932362
Test: manual
(cherry picked from https://googleplex-android-review.googlesource.com/q/commit:173cc267e0fb854cc7247e9f1e3acff0a325c4af)
Merged-In: Iccfe7b53d643d6c9f9516f91d3cee3309b11551e
Change-Id: Iccfe7b53d643d6c9f9516f91d3cee3309b11551e

src/com/android/settings/notification/NotificationAccessSettings.java

@@ -94,12 +94,6 @@ public void onCreate(Bundle icicle) {
                 .setNoun(CONFIG.noun)
                 .setSetting(CONFIG.setting)
                 .setTag(CONFIG.tag)
-                .setValidator(info -> {
-                    if (info.getComponentName().flattenToString().length() > MAX_CN_LENGTH) {
-                        return false;
-                    }
-                    return true;
-                })
                 .build();
         mServiceListing.addCallback(this::updateList);
         setPreferenceScreen(getPreferenceManager().createPreferenceScreen(mContext));
@@ -140,6 +134,11 @@ private void updateList(List<ServiceInfo> services) {
         services.sort(new PackageItemInfo.DisplayNameComparator(mPm));
         for (ServiceInfo service : services) {
             final ComponentName cn = new ComponentName(service.packageName, service.name);
+            boolean isAllowed = mNm.isNotificationListenerAccessGranted(cn);
+            if (!isAllowed && cn.flattenToString().length() > MAX_CN_LENGTH) {
+                continue;
+            }
+
             CharSequence title = null;
             try {
                 title = mPm.getApplicationInfoAsUser(
@@ -154,7 +153,7 @@ private void updateList(List<ServiceInfo> services) {
             pref.setIcon(mIconDrawableFactory.getBadgedIcon(service, service.applicationInfo,
                     UserHandle.getUserId(service.applicationInfo.uid)));
             pref.setKey(cn.flattenToString());
-            pref.setSummary(mNm.isNotificationListenerAccessGranted(cn)
+            pref.setSummary(isAllowed
                     ? R.string.app_permission_summary_allowed
                     : R.string.app_permission_summary_not_allowed);
             if (managedProfileId != UserHandle.USER_NULL