Fix #7103: Shields show Session Restore - Reader Mode Internal URL

[soner-yuksel]

Summary of Changes

Adding Internal URL display for Shields Screen

This pull request fixes #7103

Submitter Checklist:

• Unit Tests are updated to cover new or changed functionality
• User-facing strings use NSLocalizableString()
• New or updated UI has been tested across:
  • Light & dark mode
  • Different size classes (iPhone, landscape, iPad)
  • Different dynamic type sizes

Test Plan:

Test 1:

Load a page
Quit browser and relaunch
Open shields while the page is loading

Test 2:

Load a page
Activate Reader mode
Open shields

Screenshots:

Reviewer Checklist:

• Issues include necessary QA labels:
  • QA/(Yes|No)
  • bug / enhancement
• Necessary security reviews have taken place.
• Adequate unit test coverage exists to prevent regressions.
• Adequate test plan exists for QA to validate (if applicable).
• Issue and pull request is assigned to a milestone (should happen at merge time).