[Conflict Resolver] Multiselect values

[laemtl]

Change the display of multi select values from value1{@}value2 to value1, value2 in the Correct Answer column of Unresolved and Resolved Conflicts.

• Resolves [23.0][Conflict Resolver] Resolved Conflicts > Correct answer displays values incorrectly #7217

[sruthymathew123]

@laemtl I tested on IBIS database and works well for multi select values already existing in the conflict resolver

But I am addressing a small issue I noticed while testing this PR on IBIS. When I tried to create a new conflict(with 23.0 Release) with multi-select options, the values are getting saved as Array in the backend instead of value1{@}value2. IBIS is not updated with 23.0 version, so I don't know if it is an IBIS specific thing. But I just want to check if the multi-select values are saving correctly in the backend with 23.0.
@jesscall Can you just confirm if it is happening for CCNA on 23.0.

[laemtl]

@sruthymathew123 The bug you reported is related to another issue. It occurred on CCNA and was fixed by adding

//Any LorisForm multiple selects must be listed here
$this->selectMultipleElements = array(
    'multi-select field name 1',
    ...
);

in the instrument setup function. If the previous Loris versions the method name was _selectMultipleElements (notice the undersore) and needs to be renamed selectMultipleElements otherwise it won't work.

[sruthymathew123]

@laemtl Thanks for checking.