Alternative Names improvements and easier AMarkup sharing from Angles

⭐️ New

• 🔀 Alternative Names toggle. A new setting for None buttons stops empty lists from showing.
• 🗑️ Swipe to delete entries in the Alternative Names list, making them easier to manage.
• 📲 Better AirDrop with Angles. AMarkup files shared by AirDrop work more smoothly with Timelines. Long press to share, then select the Timelines icon.

🐛 Fixed

• The Change button appeared disabled when you first created a None button.
• Changes made with Change were lost when you switched between buttons or button types and then went back to the original selection.