[Feature Request] White Label: Replace default favicon

[MonsteraCompany]

As part of the white-labeling features, it would be great to allow replacing the default favicon of the entire platform (admin + client portal) with a custom one.

Currently, the default favicon is used everywhere, which slightly breaks the branding consistency.

Proposal

• Add a simple option to upload a new favicon (e.g. .ico, .png) from the white-label admin settings
• Apply the uploaded favicon site-wide (including the login page, admin dashboard, and client portal)

Requirements

• Upload field in white-label settings for favicon
• Replace the current static favicon in all layouts
• Add fallback to default if no custom favicon is uploaded
• Cache/versioning support to avoid browser-side issues