Minor adjustment to the SessionConfiguration docs, making mention of the addition of .unauthorized (401)

Author: rayanwaked

Sources/ATProtoKit/APIReference/SessionManager/SessionConfiguration.swift

@@ -112,6 +112,9 @@ public protocol SessionConfiguration: AnyObject, Sendable {
     /// while adding the password and tokens to the `keychainProtocol` instance. Additional
     /// Two-Factor Authentication implementations must be handled as well.
     ///
+    /// - Note: 2FA detection now supports both `.badRequest` (400) and `.unauthorized` (401)
+    /// responses containing the `AuthFactorTokenRequired` error.
+    ///
     /// - Parameters:
     ///   - handle: The hanle used for the account.
     ///   - password: The password used for the account.