Consider streams when checking for user/* contents

[drzraf]

My setup.php does

return [
    'environment' => $environment,
    'streams' => [
        'schemes' => [
            'user' => [
                'type' => 'ReadOnlyStream',
                'prefixes' => [
                    '' => ["user/foobar/"],
                ]
            ],
        ]
    ]
];

Still, problems does not interpolate (custom) streams and blindly checks for user/data instead of user/foobar/dataetc...