Cannot change theme on desktop if header and home navigation is hidden

### Description

- How did you install Glance? (Docker container, manual binary install, etc) - Docker container
- Which version of Glance are you using? - latest version of glanceapp docker image
- Include the relevant parts of your glance.yml if applicable (widget, data source, properties used, etc)
```
- name: Home
head-widgets:
- type: search
hide-header: true
search-engine: duckduckgo
hide-desktop-navigation: true
columns:
- size: small
```
- Include any relevant logs or screenshots if applicable -

- Is the issue specific to a certain browser or OS? - No
- Steps to reliably reproduce the issue - Configure glance as per above configuration, on desktop browser you will not see an option to change the theme.
- Are you hosting Glance on a VPS? - No
- Anything else you think might be relevant - NA