Issue#3370223: Improve performance for large menus

Kasper Garnæsrequested to merge
issue/menu_item_extras-3370223:3370223-performance-issue-in-23 into 3.1.x

Issue #3370223: Improve performance for large menus

This MR improves upon the existing suggestions in MR 37 and the related review comments from das-peter.

Key changes are:

  • Removal of static caching to avoid problem when a menu is rendered multiple times with different configurations on the same page
  • Dependency injection for language management
  • Simplification of cache handling

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