Parent items not getting current class from markCurrentTree when child links are in megamenu

[jenlampton]

The parent item in the menu does not recieve the current class when there are child links in a mega menu.

Below is my megamenu structure:

<ul data-sm-options="{markCurrentItem: true, markCurrentTree: true}" id="smartmenus-1" class="sm sm-simple smartmenus-behavior-processed" data-smartmenus-id="154942382694552">
  <li class="our-work">
    <a href="/our-work" title="" class="has-submenu" id="sm-154942382694552-3" aria-haspopup="true" aria-controls="sm-154942382694552-4" aria-expanded="false">Our Work<span class="sub-arrow"></span></a>
    <ul class="mega-menu sm-nowrap" id="sm-154942382694552-4" role="group" aria-hidden="true" aria-labelledby="sm-154942382694552-3" aria-expanded="false" style="width: auto; display: none; top: auto; left: 0px; margin-left: 0px; margin-top: 0px; min-width: 10em; max-width: 20em;">
      <li>
        <div class="item-list">
          <ul class="mega-menu-child">
            <li class="first"><a href="/our-work/planning">Planning</a></li>
            <li><a href="/our-work-planning/regional-housing-need-allocation-rhna">Regional Housing Need Allocation (RHNA)</a></li>
            <li><a href="/our-work-planning/housing-elements">Housing Elements</a></li>
            <li><a href="/our-work-planning/accessory-dwelling-units">Accessory Dwelling Units</a></li>
            <li><a href="/our-work-planning/casa%E2%80%94-committee-house-bay-area">CASA—The Committee to House the Bay Area</a></li>
            <li><a href="/our-work-planning/priority-development-areas">Priority Development Areas</a></li>
            <li><a href="/our-work-planning/priority-conservation-areas">Priority Conservation Areas</a></li>
            <li><a href="/our-work-planning/east-bay-corridors-initiative">East Bay Corridors Initiative</a></li>
            <li><a href="/our-work-planning/resilience">Resilience</a></li>
            <li><a href="/our-work-planning/horizons">Horizons</a></li>
            <li><a href="/our-work-planning/plan-bay-area">Plan Bay Area</a></li>
            <li class="last"><a href="/our-work-planning/economic-development-district">Economic Development District</a></li>
          </ul>
        </div>
        <div class="item-para">
          <p>something</p>
        </div>
        <div class="item-para">
          <p>something else</p>
        </div>
      </li>
    </ul>
  </li>
  <li class="meetings--events">
    <a href="/meetings" title="" class="has-submenu" id="sm-154942382694552-7" aria-haspopup="true" aria-controls="sm-154942382694552-8" aria-expanded="false">Meetings &amp; Events<span class="sub-arrow"></span></a>
    <ul data-sm-options="{markCurrentItem: true, markCurrentTree: true}" id="sm-154942382694552-8" role="group" aria-hidden="true" aria-labelledby="sm-154942382694552-7" aria-expanded="false" style="width: auto; min-width: 10em; display: none; max-width: 20em; top: auto; left: 0px; margin-left: 0px; margin-top: 0px;" class="sm-nowrap">
      <li class="first live-webcasts"><a href="/meetings-events/live-webcasts">Live Webcasts</a></li>
      <li class="last meeting-archives"><a href="/meetings-events/meeting-archives">Meeting Archives</a></li>
    </ul>
  </li>
  <li class="last news"><a href="/news" title="" class="has-submenu current" id="sm-154942382694552-9" aria-haspopup="true" aria-controls="sm-154942382694552-10" aria-expanded="false">News<span class="sub-arrow"></span></a></li>
</ul>

Follow up to #86