Fix shared post schema startup crash

src/modules/posts/schemas/post-share.schema.ts

@@ -1,15 +1,9 @@
-import { Prop, Schema, SchemaFactory, raw } from '@nestjs/mongoose';
-import { HydratedDocument, Types } from 'mongoose';
+import { Prop, Schema, SchemaFactory } from '@nestjs/mongoose';
+import { HydratedDocument, SchemaTypes, Types } from 'mongoose';
 import { PostShareTarget } from '../dto/share-post.dto';
 
 export type PostShareDocument = HydratedDocument<PostShare>;
 
-export const sharedFromSchema = raw({
-  type: { type: String, enum: ['user', 'profile', 'feed', 'unknown'], default: 'unknown' },
-  id: { type: String, default: '' },
-  name: { type: String, default: '' },
-});
-
 @Schema({ timestamps: true, versionKey: false, collection: 'postshares' })
 export class PostShare {
   @Prop({ type: Types.ObjectId, required: true, index: true })
@@ -21,8 +15,14 @@ export class PostShare {
   @Prop({ type: Types.ObjectId, required: true, index: true })
   originalAuthorId!: Types.ObjectId;
 
-  @Prop({ type: sharedFromSchema, default: null })
-  sharedFrom?: { type: 'user' | 'profile' | 'feed' | 'unknown'; id?: string; name?: string } | null;
+  @Prop({ type: SchemaTypes.Mixed, default: undefined })
+  sharedFrom?: {
+    type: 'user' | 'profile' | 'feed' | 'unknown';
+    id?: string;
+    name?: string;
+    username?: string;
+    avatar?: string;
+  };
 
   @Prop({ type: String, enum: Object.values(PostShareTarget), default: PostShareTarget.PROFILE, index: true })
   target!: PostShareTarget;