Fix collaboration request schema field types

src/modules/collaboration-requests/schemas/collaboration-request.schema.ts

@@ -21,19 +21,30 @@ export class CollaborationRequest {
   @Prop({ type: Types.ObjectId, ref: User.name, required: true, index: true })
   targetUserId!: Types.ObjectId;
 
-  @Prop({ enum: ['pending', 'approved', 'rejected'], default: 'pending', index: true })
+  @Prop({ type: String, enum: ['pending', 'approved', 'rejected'], default: 'pending', index: true })
   status!: 'pending' | 'approved' | 'rejected';
 
-  @Prop({ enum: COLLABORATION_TYPES, default: null, index: true })
+  @Prop({
+    type: String,
+    enum: COLLABORATION_TYPES,
+    required: false,
+    default: null,
+    index: true,
+  })
   collaborationType?: CollaborationType | null;
 
-  @Prop({ default: '', trim: true, maxlength: 1000 })
+  @Prop({ type: String, required: false, default: '', trim: true, maxlength: 1000 })
   message!: string;
 
-  @Prop({ default: '', trim: true, maxlength: 500 })
+  @Prop({ type: String, required: false, default: '', trim: true, maxlength: 500 })
   attachmentUrl!: string;
 
-  @Prop({ enum: COLLABORATION_ATTACHMENT_TYPES, default: null })
+  @Prop({
+    type: String,
+    enum: COLLABORATION_ATTACHMENT_TYPES,
+    required: false,
+    default: null,
+  })
   attachmentType?: CollaborationAttachmentType | null;
 }