Matching activity cards across the app

Fixed

• Challenge ties now rank whoever joined first higher when training days and workout counts are equal.
• Activity cards in challenges and the friends feed now share the profile layout: a single-line title, time below, a compact horizontal emoji-only reaction dropdown on the side and falling reaction emojis. The member’s name and profile picture stay visible.
• Received reaction counts sit side by side below the activity details. Only the reaction dropdown stays beside the title, leaving more room for the activity name. A clearer label below the reactions identifies who reacted.
• Cardio names are translated by the shared card in every activity feed.
• Loading placeholders now match profile and activity layouts. Exercise names use the available translation consistently across workouts, history, templates and widgets.