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/auth/user_grant.go

@@ -5,6 +5,7 @@ import (
 
 	"github.com/zitadel/zitadel/internal/api/authz"
 	"github.com/zitadel/zitadel/internal/api/grpc/object"
+	"github.com/zitadel/zitadel/internal/api/grpc/user"
 	"github.com/zitadel/zitadel/internal/query"
 	auth_pb "github.com/zitadel/zitadel/pkg/grpc/auth"
 )
@@ -53,5 +54,6 @@ func UserGrantToPb(grant *query.UserGrant) *auth_pb.UserGrant {
 		ProjectName:    grant.ProjectName,
 		ProjectGrantId: grant.GrantID,
 		RoleKeys:       grant.Roles,
+		UserType:       user.TypeToPb(grant.UserType),
 	}
 }