278 technical learning path view minimap better visibility

[KLee954]

Description

Changed the style of the React Flow Minimap and added resizing behaviour.

Type of changes

• [ ] Bugfix
• [x] Feature
• [ ] Refactoring
• [ ] Optimization
• [ ] Documentation
• [ ] CI/CD
• [ ] Other

Requirements

• [ ] Everything build out of Material UI components
• [ ] New Material UI components capsulated via dependency injection in "@common/components"
• [ ] Provide basic information pieces in comments
• [ ] Establish interface to backend (if necessary)
• [ ] Use Skeleton components if something has to be fetched (if necessary)
• [ ] Error management: Components should handle undefined inputs
• [x] Components should be resuable (if possible)
• [ ] Component Requirements are met

[KLee954]

[juli-txt]

Remove this unused import of 'MiniMap'.

[sonarcloud[bot]]

Quality Gate failed

Failed conditions
B Maintainability Rating on New Code (required ≥ A)

See analysis details on SonarCloud

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