Update FXIOS-9851 [Native Error Page] tab tray screenshot for new error pages

[tusharC95]

:scroll: Tickets

Jira ticket Github issue

:bulb: Description

• Update screenshot logic for tab tray thumbnail.
• Removed the nativeErrorPage case from BrowserViewType as it is no longer needed.

:pencil: Checklist

You have to check all boxes before merging

• [x] Filled in the above information (tickets numbers and description of your work)
• [x] Updated the PR name to follow our PR naming guidelines
• [ ] Wrote unit tests and/or ensured the tests suite is passing
• [ ] When working on UI, I checked and implemented accessibility (minimum Dynamic Text and VoiceOver)
• [ ] If needed, I updated documentation / comments for complex code and public methods
• [ ] If needed, added a backport comment (example @Mergifyio backport release/v120)

[mobiletest-ci-bot]

	Messages
:book:	Project coverage: 32.47%
:book:	Edited 5 files
:book:	Created 0 files

Client.app: Coverage: 31.3

File	Coverage
BrowserViewController.swift	4.74%	⚠️
BrowserViewControllerState.swift	42.89%	⚠️
ScreenshotHelper.swift	70.73%	✅

Generated by :no_entry_sign: Danger Swift against b6cea992b102110e42046a2a9480b5aeff1475f4