fix: share size not displayed on my shares page

backend/src/share/share.service.ts

@@ -229,6 +229,7 @@ export class ShareService {
     return shares.map((share) => {
       return {
         ...share,
+        size: share.files.reduce((acc, file) => acc + parseInt(file.size), 0),
         recipients: share.recipients.map((recipients) => recipients.email),
       };
     });