Community/portal lost access to tags

[caybro]

(discovered as part of #9971, #10145)

@jrainville so this fixes tags for an existing community; however when you try to create a new community, the tags are simply not populated:

This is leading to code that got refactored recently as part of: Make communities data fetch calls async + clean up #9829

Same for the Community portal:

it's supposed to have a "tags row", CommunityPortalLayout.qml, l.152:

CommunityTagsRow {
    id: communityTags
    Layout.fillWidth: true
    tags: root.communitiesStore.communityTags
}

[caybro]

Possible regression from Make communities data fetch calls async + clean up #9829