[FIX] #47191 1: Fix duplicate autocomplete options returned in user search

[mBeym]

Fixes https://mantis.ilias.de/view.php?id=47191

If accepted should be picked into trunk

[kergomard]

Thank you very much for the PR @mBeym .

I do not think though, that this fully solves the problem. You are comparing the values as arrays, which in turn would lead to small differences in values that are not displayed (i.e. 'value' and 'searchBy') leaving the corresponding entries in and being still shown to the user as duplicates.

What if we would move the array_map to an array_reduce and use $v->getTagArray()['display'] as keys? This would lead to the value from the profile_data_repository being used, as this value will be the last one. To be on the save side we could then wrap everything in an array_values (please set this to its own line). We do not care about sorting, as we are doing this in the next step.

Best,
@kergomard