Add Interactive icon button #115 for reaction

[alanpoon]

https://github.com/project-robius/robrix/issues/115

https://github.com/user-attachments/assets/f0591221-303d-4f3d-bd38-fff279b8e407

Uploading wrap.mp4…

1. Clicking the button sends toggle_reaction
2. Display a row of buttons for interactions with wrap