fix: store auth methods instead of AMR in auth request linking and OIDC Session (#6192)

This PR changes the information stored on the SessionLinkedEvent and (OIDC Session) AddedEvent from OIDC AMR strings to domain.UserAuthMethodTypes, so no information is lost in the process (e.g. authentication with an IDP)

internal/command/auth_request.go

@@ -5,7 +5,6 @@ import (
 	"time"
 
 	"github.com/zitadel/zitadel/internal/api/authz"
-	"github.com/zitadel/zitadel/internal/api/oidc/amr"
 	"github.com/zitadel/zitadel/internal/domain"
 	"github.com/zitadel/zitadel/internal/errors"
 	"github.com/zitadel/zitadel/internal/repository/authrequest"
@@ -32,10 +31,10 @@ type AuthRequest struct {
 
 type CurrentAuthRequest struct {
 	*AuthRequest
-	SessionID string
-	UserID    string
-	AMR       []string
-	AuthTime  time.Time
+	SessionID   string
+	UserID      string
+	AuthMethods []domain.UserAuthMethodType
+	AuthTime    time.Time
 }
 
 const IDPrefixV2 = "V2_"
@@ -108,7 +107,7 @@ func (c *Commands) LinkSessionToAuthRequest(ctx context.Context, id, sessionID,
 		sessionID,
 		sessionWriteModel.UserID,
 		sessionWriteModel.AuthenticationTime(),
-		amr.List(sessionWriteModel),
+		sessionWriteModel.AuthMethodTypes(),
 	)); err != nil {
 		return nil, nil, err
 	}
@@ -187,10 +186,10 @@ func authRequestWriteModelToCurrentAuthRequest(writeModel *AuthRequestWriteModel
 			LoginHint:     writeModel.LoginHint,
 			HintUserID:    writeModel.HintUserID,
 		},
-		SessionID: writeModel.SessionID,
-		UserID:    writeModel.UserID,
-		AMR:       writeModel.AMR,
-		AuthTime:  writeModel.AuthTime,
+		SessionID:   writeModel.SessionID,
+		UserID:      writeModel.UserID,
+		AuthMethods: writeModel.AuthMethods,
+		AuthTime:    writeModel.AuthTime,
 	}
 }