[mobile] fix position issue using requestAnimationFrame

[divazbozz]

Problem

• we have a hero image loading on /get-started
• the hero image has no explicit dimensions, so it causes a layout shift when it loads. The
  ResizeObserver on document.documentElement might not reliably catch this on mobile browsers.

Solve

• use raf requestAnimationFrame to handle our resize event
  • we will only update position when necessary (by calculation position change)
  • when isActivated (meaning user click into address component and is focused) we stop pollin raf as the position is set by the open() method, and at this point no further layout drift should happen, so we cancel the polling.

Testing

mobile safari view

ScreenRecording_01-27-2026.17-08-09_1.MP4