Atomic identity sync for shared sessions; sign-up race fixed

What's Changed

• Add atomic identity sync for shared sessions by @seanperez29 in https://github.com/clerk/clerk-ios/pull/524
• Fix public Apple sign-up flow by @seanperez29 in https://github.com/clerk/clerk-ios/pull/527
• Stop showing automatic passkey sign-in errors to end users by @mikepitre in https://github.com/clerk/clerk-ios/pull/528
• Sean/fix startup signup race by @seanperez29 in https://github.com/clerk/clerk-ios/pull/526
• Add isolated Clerk test configuration by @seanperez29 in https://github.com/clerk/clerk-ios/pull/529
• Suppress automatic passkey authorization errors by @seanperez29 in https://github.com/clerk/clerk-ios/pull/530

Full Changelog: https://github.com/clerk/clerk-ios/compare/1.3.2...1.3.3