Prevent swap KYC terms modal from stacking and dismiss abuse

[j0ntz]

Description

Asana task

Fixes two bugs with the swap KYC terms verification modal:

1. Stacking modals: When the quote auto-refresh timer expires while the terms modal is open, the scene replaces itself via SwapProcessingScene, remounts, and calls swapVerifyTerms again — stacking a duplicate modal on the still-open first one. Fixed by deferring the timer: if it fires while the terms modal is pending, the expiry is recorded and replayed after the modal resolves.

2. Destructive dismissal: Backdrop tap, swipe-down, X button, and hardware back all resolved false, triggering changeEnabled(false) on the swap provider — silently removing it from exchange settings without clear user intent. Fixed by removing onCancel from the EdgeModal, making the modal non-dismissable. The user must now explicitly tap Accept or Reject.

Closes: https://app.asana.com/1/9976422036640/project/1200972350208303/task/1213613256799799

CHANGELOG

Does this branch warrant an entry to the CHANGELOG?

• Yes
• No

Dependencies

none

Requirements

If you have made any visual changes to the GUI. Make sure you have:

• Tested on iOS device
• Tested on Android device
• Tested on small-screen device (iPod Touch)
• Tested on large-screen device (tablet)

---

Note

Medium Risk
Changes swap confirmation navigation timing and makes the terms modal non-dismissible, which can affect swap quote refresh/timeout behavior and provider enablement in edge cases.

Overview
Fixes swap KYC/terms verification UX by making SwapVerifyTermsModal non-cancelable (users must explicitly Accept/Reject) to prevent accidental rejection from backdrop/back actions.

Updates SwapConfirmationScene to defer the auto-refresh/expiry timer while the terms check is open and replay expiration after the modal resolves, preventing duplicate stacked terms modals during quote refresh.

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