[BUGFIX] Cannot use contain with multivalued static enumeration column

When a column is defined as a multivalued static enumeration:
'somecolumn' => array(
    'exclude' => 0,
    'label' => 'Some label',
    'config' => array(
        'type' => 'select',
        'items' => array(
            array('Option 1', 1),
            array('Option 2', 2),
            array('Option 3', 3),
            array('Option 4', 4),
        ),
        'size' => 4,
        'maxitems' => 4,
        'eval' => ''
    ),
),
it is not possible to query the domain model using operation "contains":
$value = 2;
$query->matching(
    $query->contains('somecolumn', $value)
);

Releases: 6.2, 6.1
Fixes: #56205
Change-Id: If898db7f355ad931d1c8b55febc2f59f19b0f38b
Reviewed-on: https://review.typo3.org/27787
Reviewed-by: Alexander Opitz
Reviewed-by: Wouter Wolters
Reviewed-by: Stefan Froemken
Tested-by: Stefan Froemken
Reviewed-by: Markus Klein
Tested-by: Markus Klein
Reviewed-on: https://review.typo3.org/28471
Reviewed-by: Xavier Perseguers
Tested-by: Xavier Perseguers