Merge pull request #821 from rgoldberg/818-remove-retroactive

Remove `@retroactive`

Author: rgoldberg

Sources/mas/AppStore/ISStoreAccount.swift

@@ -8,7 +8,7 @@
 
 import CommerceKit
 
-extension ISStoreAccount: @retroactive @unchecked Sendable {
+extension ISStoreAccount: @unchecked Sendable {
     @MainActor // swiftlint:disable:next attributes
     static var primaryAccount: ISStoreAccount {
         get async {