Fix accesslist when a user has an ID only containting 0-9

[nickvergessen]

Basically we should check all array-merges ... and make sure they dont merge by user id...

Fix #6580

[MorrisJobke]

Ignore the failed CI job

[blizzz]

Can this pull in duplicate users? Or is this dealt with later?

[nickvergessen]

Can this pull in duplicate users? Or is this dealt with later?

Actually it duplicated users before:

<?php

$a = ['123' => 'foobar1', 'abc'=> 'def3'];
$b = ['123' => 'foobar2', 'abc'=> 'def4'];

var_dump(array_merge($a, $b)); // array(3) { [0]=> string(7) "foobar1" ["abc"]=> string(4) "def4" [1]=> string(7) "foobar2" }
var_dump($a+$b); // array(2) { [123]=> string(7) "foobar1" ["abc"]=> string(4) "def3" }

https://3v4l.org/Ag5KV

[blizzz]

@nickvergessen do you do the backport?

[nickvergessen]

See #7262