Use WebKit delegate flow for handling opening a new tab from _blank links

[miasma13]

Task/Issue URL: https://app.asana.com/0/414709148257752/1208699273169079/f

Description:
In https://app.asana.com/0/414709148257752/1208699273169079/f it was identified that opening new tab via links with "_blank" target results in trimming referrer or sometimes broken flows. The previous logic used cancelling the navigation and opening a new tab followed by manual trigger to load target URL.
After investigation this approach was discouraged in favour of allowing the navigation and handling opening the new tab via WKUIDelegate callback in TabViewController.webView(_:createWebViewWith:for:windowFeatures:)

Steps to test this PR:

1. Open https://www.svcbank.com/personal-netbanking

2. Tap Continue To Login button
   Expected: A new tab with the login page should open

3. Open http://miasma13.github.io/downloads.html

4. Tap What are my headers link
   Expected: Check in the summary for referer header to properly list original page

Retest navigation with various means of opening a new tab (including via JS calls)

Definition of Done (Internal Only):

• Does this PR satisfy our Definition of Done?

Copy Testing:

• Use of correct apostrophes in new copy, ie ’ rather than '

Orientation Testing:

• Portrait
• Landscape

Device Testing:

• iPhone SE (1st Gen)
• iPhone 8
• iPhone X
• iPhone 14 Pro
• iPad

OS Testing:

• iOS 15
• iOS 16
• iOS 17

Theme Testing:

• Light theme
• Dark theme

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Internal references:

Software Engineering Expectations
Technical Design Template

[github-actions]

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