Is there a way to both group by a column and add a string by one column?

Question

I have a stored procedure like this:

ALTER PROC FindPolicyByService
    @codes varchar(200)
AS 
BEGIN
    SELECT dbo.DXBusinessPolicy_Policy.Code AS PolicyCode,
           dbo.DXBusinessPolicy_Policy.Name AS PolicyName,
           dbo.DXBusinessPolicy_Service.Name AS ServiceName
        FROM dbo.DXBusinessPolicy_Policy 
            join dbo.DXBusinessPolicy_PolicyService ON dbo.DXBusinessPolicy_Policy.ID = dbo.DXBusinessPolicy_PolicyService.PolicyID
            join dbo.DXBusinessPolicy_Service ON dbo.DXBusinessPolicy_PolicyService.ServiceID = dbo.DXBusinessPolicy_Service.ID
        WHERE dbo.DXBusinessPolicy_Service.Code IN (select value from string_split(@codes,','))
END

exec FindPolicyByService "ott,cmr"

this is the result when I execute it

	PolicyCode	PolicyName	ServiceName
1	COMBO.2103002	Giá nền combo T04.2021	Camera
2	COMBO.2103002	Giá nền combo T04.2021	OTT
3	COMBO.2103003	Combo T5.2021	Camera
4	COMBO.2103003	Combo T5.2021	OTT

but this is my expectation

	PolicyCode	PolicyName	ServiceName
1	COMBO.2103002	Giá nền combo T04.2021	Camera, OTT
2	COMBO.2103003	Combo T5.2021	Camera, OTT

I don't know if there is a way to do that, thanks for everyone's help