[iOS] - Update Brave Method IDs in SkusJS

[Brandon-T]

Description

• In this PR: [iOS] - Inject VPN subscription info on script message brave-core#26969 I removed the ID mapping and simplified the code.
• The previous code was doing SecureScript('1') which makes zero sense since '1' is a primitive.
• So it was removed since the script is sandboxed.
• However, this causes an issue because it is still used apparently.

Steps to reproduce

1. Try to link accounts on account.brave.com
2. Page shows 500 Internal Server Error

Actual result

• Page shows 500 internal server error

Expected result

• Page should work fine

Reproduces how often

Easily reproduced

Brave version

• 1.75.x

Device/iOS version

• All

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