FIX: Prevent producing "undefined" strings (PR #10042)

Fixes a bug in search-menu-results (type: “group”), where:

const fullName = escapeExpression(group.fullName);
const name = escapeExpression(group.name);
const groupNames = [h("span.name", fullName || name)];

groupNames could end up having value “undefined” if a group doesn’t have a fullName.


Alternatively I could fix it in search-menu-results:

const fullName = group.fullName && escapeExpression(group.fullName);
const name = escapeExpression(group.name);
const groupNames = [h("span.name", fullName || name)];

GitHub