Added condition UpdateMemberRole.

User cannot change role of their own, so that it will avoid edge cases like
1. User is the last owner of the project.
2. User accidentally losing owner access to the projects.

Signed-off-by: aryan <aryan1bhokare@gmail.com>

chaoscenter/authentication/api/handlers/rest/project_handler.go

@@ -798,7 +798,13 @@ func UpdateMemberRole(service services.ApplicationService) gin.HandlerFunc {
 				presenter.CreateErrorResponse(utils.ErrUnauthorized))
 			return
 		}
-
+
+		uid := c.MustGet("uid").(string)
+		if uid == member.UserID {
+			c.JSON(http.StatusBadRequest, gin.H{"message": "User cannot change his own role."})
+			return
+		}
+
 		err = service.UpdateMemberRole(member.ProjectID, member.UserID, member.Role)
 		if err != nil {
 			log.Error(err)