1. Sticker pack toolbar is now at the bottom of the "sticker keyboard" in chat.
2. Sticker pack toolbar is now "floating" in a a glass panel on iOS 26, both in sticker keyboard in chat and in full-screen sticker picker in media editor.
3. There's some helper text when "recent stickers" panel is empty.
• make sticker / attachment keyboard follow system (text) keyboard height as closely as possible.
• fix chat input bar obscured by keyboard after interface rotation.
It seems that UIKit extends system keyboard background above UIInputView subclass with the purpose of making top corners rounded. This temporary fix removes custom background color from attachment picker and sticker keyboards. The result is a system-provided background that looks okay.
