It largely depends on what the will actually says.
If the will says something in particular about what happens to the holiday home, then that is what should happen (for example, it may say that the holiday home must be sold).
If the will is silent on the holiday home then it is just part of the total value of the estate that the executors need to distribute according to the will. In that situation the executors can choose to transfer the property directly to the beneficiaries.
It sounds as though the estate may have been left equally to three children.
If all three children agree to take ownership of the property then that can happen. However, if one beneficiary wants their share in cash then they cannot be forced to take a share in the holiday home.
If there is not sufficient money in the rest of the estate so that each beneficiary gets their share, then the holiday home will have to be sold.
"Or if one or two siblings want to hold on to the property, would they be forced to take that from their share of the inheritance?"
Yes (unless the will said otherwise)
"Is there a situation where a sibling that didn't want ownership of the foreign property would be forced to either accept it or, or forfeit part of their share?"
Only if this situation was specifically mentioned in the will.