Fix issue where "learn more" link on 5G NR settings doesn't work. am: d3d88afe

        super.updateState(preference);

        if (preference != null) {

            // This is necessary to ensure that setting the title to the spannable string returned

            // by getFooterText will be accepted.  Internally, setTitle does an equality check on

            // the spannable string being set to the text already set on the preference.  That

            // equality check apparently only takes into account the raw text and not and spannables

            // that are part of the text.  So we clear the title before applying the spannable

            // footer to ensure it is accepted.

            preference.setTitle("");

            preference.setTitle(getFooterText());

        }

    }