Fix results selection actions toolbar not appearing after refreshing search

After executing a drawer search from Web UI (e.g. Assets search) and refreshing the page, the results selection actions toolbar no longer appears when selecting Documents from the Grid View of the nuxeo-results element.

Steps to Reproduce:

1. In Web UI, navigate to the Assets search drawer item.
2. Input criteria as desired and execute search.
3. Switch the results to Grid View and select a Document(s) - verify that the top toolbar appears following.
4. Refresh the page.
5. Once the results are loaded, select a Document(s) as performed in step 3.

Expected behavior: results selection actions toolbar appears along the top

Actual behavior: toolbar does not appear; the following error is seen in the browser console:

Uncaught TypeError: Cannot read properties of undefined (reading 'list')
    at get items (main.bundle.js:2169:1336)
    at l._updateActionContext (main.bundle.js:2169:5254)
    at Object.F [as fn] (main.bundle.js:13276:73997)
    at L (main.bundle.js:13276:69442)
    at l._propertiesChanged (main.bundle.js:13276:80713)
    at l._flushProperties (main.bundle.js:13276:61740)
    at l._invalidateProperties (main.bundle.js:13276:78698)
    at l.set (main.bundle.js:13276:81787)
    at l._viewChanged (main.bundle.js:2169:3371)
    at Object.T [as fn] (main.bundle.js:13276:69925)

Reproducible in nightly-2021 - please see attached video for reference.