[Muse & Mist] Footer is not at the bottom of the page when the sidebar display is removed

[egandx]

PR Checklist

• The commit message follows guidelines for NexT.
• Tests for the changes was maked (for bug fixes / features).
  • Muse | Mist have been tested.
  • Pisces | Gemini have been tested.(Sidebar display only for Muse|Mist)
• Docs in NexT website have been added / updated (for features).

PR Type

• Bugfix.
• Feature.
• Code style update (formatting, local variables).
• Refactoring (no functional changes, no api changes).
• Build & CI related changes.
• Documentation.
• Translation.
• Other... Please describe:

What is the current behavior?

Issue resolved: N/A

Configuration info:
Next version: 7.8.0 (Current latest version)
Scheme: Mist & Muse

When sidebar display is removed,footer is not at the bottom of the page.

What is the new behavior?

when CONFIG.sidebar.display === 'remove', not adjusting the position of the sidebar

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