[iOS] - Expose brave://skus-internals

[Brandon-T]

Description:

• Add skus-internals on iOS whitelist

Steps to Reproduce

1. Enter brave://skus-internals into the URL-Bar

Actual result:

• Nothing happens

Expected result:

• Should load Skus-Internals

[kjozwiak]

The above requires 1.64.120 or higher for 1.64.x verification 👍

[hffvld]

Verified on iPhone 14 and iPad Air using version(s):

Device/OS: 
- iPhone 14 / iOS 17.5
- iPad Air / iPadOS 16.7.2
Brave build: 1.64 (123)
BraveCore: 1.64.123 (123.0.6312.122)

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STEPS:

1. Launch Brave
2. Go to brave://skus-internals into the URL search bar
3. Verify

ACTUAL RESULTS:

• Verified that brave://skus-internals can be accessed successfully

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iPhone	iPad