RPM-2504 ::: Avoid Keychain's errSecInteractionNotAllowed error on iOS 15

[OS-ricardomoreirasilva]

Description

For iOS 15, on SecureStorage's init method, if ProtectedData is unavailable, add an observer for the UIApplicationProtectedDataDidBecomeAvailable notification that re-triggers init when it becomes available.

Context

https://outsystemsrd.atlassian.net/browse/RPM-2504

Type of changes

• [x] Fix (non-breaking change which fixes an issue)
• [ ] Feature (non-breaking change which adds functionality)
• [ ] Refactor (cosmetic changes)
• [ ] Breaking change (change that would cause existing functionality to not work as expected)

Platforms affected

iOS

Tests

The issue couldn't be replicated.

Checklist

• [x] Pull request title follows the format RNMT-XXXX <title>
• [x] Code follows code style of this project
• [x] CHANGELOG.md file is correctly updated
• [ ] Changes require an update to the documentation
  • [ ] Documentation has been updated accordingly