[MM-36472] Fix inconsistencies in Roles columns (#18390)

* Fix inconsistencies in Roles columns

* Add new migrations

model/team_member.go

@@ -98,7 +98,6 @@ func TeamMemberWithErrorToString(o *TeamMemberWithError) string {
 }
 
 func (o *TeamMember) IsValid() *AppError {
-
 	if !IsValidId(o.TeamId) {
 		return NewAppError("TeamMember.IsValid", "model.team_member.is_valid.team_id.app_error", nil, "", http.StatusBadRequest)
 	}
@@ -107,6 +106,11 @@ func (o *TeamMember) IsValid() *AppError {
 		return NewAppError("TeamMember.IsValid", "model.team_member.is_valid.user_id.app_error", nil, "", http.StatusBadRequest)
 	}
 
+	if len(o.Roles) > UserRolesMaxLength {
+		return NewAppError("TeamMember.IsValid", "model.team_member.is_valid.roles_limit.app_error",
+			map[string]interface{}{"Limit": UserRolesMaxLength}, "", http.StatusBadRequest)
+	}
+
 	return nil
 }