Touch key dialog shows up multiple times on hitting cancel

[jumde]

Description:

If the user clicks cancel on the touch key dialog it should return an error. The dialog pops-up multiple times before showing an error.

Steps to Reproduce

1. Navigate to demo.yubico.com/u2f
2. Click register
3. Hit cancel

Test Plan

Specified here: #1356

Actual result:
The dialog box shows up again

Expected result:
Should return an error

Reproduces how often: [Easily reproduced, Intermittent Issue]

Brave Version:

Device details:

Website problems only:

• did you check with Brave Shields down?
• did you check in Safari/Firefox (WkWebView-based browsers)?

Additional Information

[jumde]

The modal pops-up multiple times if multiple tabs are open. Working on a fix

[srirambv]

This is happening due to multiple tabs open. If I only have one tab open and hit cancel the dialog is removed

[LaurenWags]

Verified passed with iPad 5th Gen using 1.11.1 (19.08.12.19)

• Verified test plan from Fix #1349: Touch key dialog should be displayed once  #1356

Verification PASSED on iPhone 6s+ iOS 12.4 using 1.11.1 (19.08.12.20)

• Verified test plan from Fix #1349: Touch key dialog should be displayed once  #1356 and ensured we're not getting multiple modals when cancelling or going through Registration and Authentication via demo.yubico.com/u2f.