[SEO] public site label not useful in page name

[Jihed525]

Problem Statement

space's public page is displayed as follow: public site - SpaceX , yet no way to update the term public site.
In case of space name update, we display also the first space name.

Feature — Solution & Expected Benefits (only if Type = Feature)

Proposed Solution

The public site page name must be as follow: "space display name" - "Brand name"

Additional Context

eXo: 85181

[Jihed525]

builders: 10313