Federated share with known user leads to wrong message

[dj4oC]

As a user, I want to share a file with an external, but federated user.
I already shared files with this user so the user is known already by the system.
Then I enter the Federated ID, I get the message: "Kein Benutzer oder Gruppe grunfunden für ID".
But the correct user is listes below since I have shared with him already.
Please correct message to: User had been added to already. Please choose from list below.

ownCloud 10.14.3

@gvlidiya

[DeepDiver1975]

unrelated to federated sharing - happens with "normal" sharing as well

[DeepDiver1975]

API provides necessary data to add the required logic to the frontend.

Effort: 3md

[DeepDiver1975]

draft fix: #41264