[shapes] [bug] text doesn't snap to container when actively inputting text via text field

## Reproduction

https://github.com/user-attachments/assets/759ec019-574d-4841-b6d8-458686574cb2

## Context

This showcases the text/container snapping behavior in the magic graph sandbox but this is an issue with how magic shape deals with spawning and managing `<input />` elements while user is editing the text in the line/arrows text area.