Move brand logo styles to standalone stylesheet and class selector
What does this MR do and why?
The brand logo needs to be consumed by a logged out header component !125252 (closed) and the super sidebar. The styles are coupled within the super sidebar context. Moving the brand logo to it's own styles with top-level class to simplify multiple instances.
Screenshots or screen recordings
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How to set up and validate locally
- Ensure new navigation is enabled
- Validate brand logo placement and background-color in light/dark mode
MR acceptance checklist
This checklist encourages us to confirm any changes have been analyzed to reduce risks in quality, performance, reliability, security, and maintainability.
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I have evaluated the MR acceptance checklist for this MR.
Related to #389603 (closed)