Update java doc to the ENABLED_INPUT_METHODS

Bug: 253164661
Test: Build
Change-Id: Ic016dd52c561ea407f454eceb78a410ed02bb71d

core/java/android/provider/Settings.java

@@ -7200,6 +7200,9 @@ public final class Settings {
          *
          * Format like "ime0;subtype0;subtype1;subtype2:ime1:ime2;subtype0"
          * where imeId is ComponentName and subtype is int32.
+         *
+         * <p>Note: This setting is not readable to the app targeting API level 34 or higher. use
+         * {@link android.view.inputmethod.InputMethodManager#getEnabledInputMethodList()} instead.
          */
         @Readable(maxTargetSdk = Build.VERSION_CODES.TIRAMISU)
         public static final String ENABLED_INPUT_METHODS = "enabled_input_methods";