Hi,
OLS (Table or Column level) security is set in the JSON-based metadata in the Model.bim. It is not going to check any table content like RLS does.
From this base, and the users role is defined with TMSL in the model.bim file we could not dynamically change it like in a table for RLS. So what required is not supported for now.
Unfortunately I could not find a workaround here, maybe other experts could give better insight on this issue.
Regards,
Lukas