chore(console): remove first and lastName fallback from user (#5629)

* chore(console): remove first and lastName fallback from user

* use display name and ensure it's set without required name fields

* add user type to user grant and memberships responses

* contributor, members

* fix avatar display checks

---------

Co-authored-by: Livio Spring <livio.a@gmail.com>

internal/api/grpc/member/converter.go

@@ -2,6 +2,7 @@ package member
 
 import (
 	"github.com/zitadel/zitadel/internal/api/grpc/object"
+	"github.com/zitadel/zitadel/internal/api/grpc/user"
 	"github.com/zitadel/zitadel/internal/domain"
 	"github.com/zitadel/zitadel/internal/errors"
 	"github.com/zitadel/zitadel/internal/query"
@@ -33,6 +34,7 @@ func MemberToPb(assetAPIPrefix string, m *query.Member) *member_pb.Member {
 		LastName:           m.LastName,
 		DisplayName:        m.DisplayName,
 		AvatarUrl:          domain.AvatarURL(assetAPIPrefix, m.ResourceOwner, m.AvatarURL),
+		UserType:           user.TypeToPb(m.UserType),
 		Details: object.ToViewDetailsPb(
 			m.Sequence,
 			m.CreationDate,