fix(projects): handle non-array collaborators in service to prevent errors

backend/src/modules/projects/services/projects.service.ts

@@ -247,6 +247,11 @@ export class ProjectsService {
         .innerJoin(schema.users, eq(schema.projectCollaborators.userId, schema.users.id))
         .where(eq(schema.projectCollaborators.projectId, projectId));
 
+      // Ensure collaborators is an array before mapping
+      if (!Array.isArray(collaborators)) {
+        return [];
+      }
+
       // Map the results to extract just the user objects
       return collaborators.map(collaborator => collaborator.user);
     } catch (error) {