[marinofaggiana]

Replace the custom options button with UIKit’s navigation overflow menu, avoiding duplicate ellipsis buttons when iPad tabs share the navigation bar.

• Apply consistent action ordering and separators across Files, Media, recommendations and viewers, including long-press menus.
• Keep deletion actions in the final section.
• Add “View in folder” to recommendations and Media context menus, reusing the viewer action.
• Give the Media date selector a “Select date” label when it moves into overflow.
• Simplify navigation controller setup, selection handling and menu updates.

🤖 AI (if applicable)

• The content of this PR was partly or fully generated using AI (N/A)