NethLink: User removed from OpenLDAP still appears in NethLink favorites

[viktec]

Steps to reproduce

1. Disassociate a user from an internal extension in the PBX.
2. Delete the same user from the OpenLDAP user database.
3. Check the NethLink favorites list.

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Expected behavior
The deleted user (and the related extension) should no longer appear in the NethLink favorites.

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Actual behavior
The deleted user still appears in the NethLink favorites, even though both the user and the extension no longer exist.
In the CTI, the user correctly disappears.

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Notes
Currently, the issue can be manually resolved by deleting the related speeddial-favorite entry from the nethcti3 database (cti_phonebook).
A proper fix would ensure that when a user is deleted from the user base, any associated speeddial-favorite entries are also automatically removed.