[Follow up to #41445] Crash when displaying internal pages

[kylehickinson]

Description

This crash still is happening in a different way: #41445

There is a crash occurring for some users when loading some internal:// url (ntp, reader mode, http strict mode, etc.), unfortunately we do not know which one is causing it yet (just that its hitting an exception in InternalSchemeHandler.webView(_:start:))

Steps to reproduce

Unknown

Actual result

Crashes

Expected result

Shouldn't Crash

Reproduces how often

Intermittent issue

Brave version

1.70+

Device/iOS version

n/a

Affected browser versions

• latest AppStore
• latest TestFlight
• previous TestFlight

Reproducibility

• with Brave Shields disabled
• in the latest version of mobile Safari

Miscellaneous information

No response

[kjozwiak]

The above requires 1.71.125 or higher for 1.71.x verification 👍

[Uni-verse]

Verified on iPhone 12 running iOS 18.0 using version 1.71 (125)

• Ensured that interstitial pages are loading when testing on https://badssl.com.
• Ensured loading interstitials back to back does not cause any issues.
• Ensured loading insecure websites will show ...is not secure interstitial.
• Ensured internal pages can be loaded, ex: brave://version
• Ensured no issues using Reader mode.

example	example	example	example	example	example