SM-90: Add Server Version to Browser and Desktop Client About Pages

[coltonhurst]

Type of change

- [ ] Bug fix
- [x] New feature development
- [ ] Tech debt (refactoring, code cleanup, dependency upgrades, etc)
- [ ] Build/deploy pipeline (DevOps)
- [ ] Other

Objective

Show the server version on the about page for the browser and desktop clients, using the new /config endpoint.

Code changes

• file.ext: Description of what was changed and why

Screenshots

Before you submit

- [ ] I have checked for **linting** errors (`npm run lint`) (required)
- [ ] I have added **unit tests** where it makes sense to do so (encouraged but not required)
- [ ] This change requires a **documentation update** (notify the documentation team)
- [ ] This change has particular **deployment requirements** (notify the DevOps team)