Resolve #3482707 "Gin toolbar navigation"

Closes #3482707

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• 81b429fb - Also skip adding background when navigation is enabled

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added 4 commits

• 81b429fb...1d5b9862 - 3 commits from branch project:4.x
• dc15ccd6 - Merge 4.x

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added 1 commit

• c939ecd4 - Add case with New Drupal Navigation enabled, without Core's Navigation enabled

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