UI becomes unresponsive when enabling page zoom

[Uni-verse]

Description:

Enabling page zoom on search.brave.com results in unresponsive UI

Case 1 impacts version 1.61 and Case 2 only seems to happen on 1.60

Case 1: Enabling Page zoom on most sites will cause UI to freeze Case 2: Enabling Page Zoom on site and then using their search field (to pull upopen keyboard)

Happening on other sites such as coingecko.com when using their search field with page zoom enabled.

Steps to Reproduce

1. Open search.brave.com
2. Enable page zoom via main menu
3. Relaunching app will cause crash to happen

Actual result:

https://github.com/brave/brave-ios/assets/17885425/b8e1aa5b-3745-44c0-b6e4-661df8574e9e

Expected result:

No crash/unresponsiveness

Reproduces how often: [Easily reproduced, Intermittent Issue]

Easily

Brave Version:

1.60.x 1.61.x

• Can you reproduce this issue with the most recent build from TestFlight? Yes
• Can you reproduce this issue with the previous version of the current build from TestFlight? Yes
• Can you reproduce this issue with the current build from AppStore? Yes

Device details:

iPhone 12

Website problems only:

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

Additional Information

[Uni-verse]

Verified on iPhone X running iOS 16.7 using version 1.60.1 (23.12.15.0)

• Ensured that enabling page zoom does not cause UI to freeze.
• Ensured that pressing done to close keyboard window does not cause UI to freeze up.

https://github.com/brave/brave-ios/assets/17885425/4998942a-fbc9-472d-90a1-a700d7e3f746