Empty version of the user profile created on each user sync if avatar sync is enabled and avatar photo changes format on LDAP

How to reproduce:

• enable avatar sync for LDAP profiles
• configure the image name to "profile", for example, in the LDAP config
• add an image in png format on LDAP for a user
• login with the user
  • the profile.png attachment will be created on the user profile page and image profile.png is set as the avatar of the user
• change the image of the user on LDAP, to a jpeg image
• login again with the user, more than once (3-4 times), without changing anything else on the LDAP side

Expected result:

• the user profile page is updated only once following these multiple authentications, for the update of the avatar (adding the new attachment & setting it as the avatar)

Actual result:

• the user profile is updated once to create the profile.jpeg attachment
  • however, profile.jpeg is not set as the avatar of the user
• then it's updated again once for each authentication, thus risking getting a large number of versions
  • the diff in history doesn't show any change for these subsequent updates
  • however, the attachment profile.jpeg is also getting one new version for each login - if the image is large this may create also a storage size issue