What would it take for a Malta-class carrier to be built?

What would need to change for at least one Malta-class carrier to be built?

The government would need to make a different decision at the end of the war; building the carrier is judged beneficial to the Royal Navy.

Building a Malta-class carrier would require a different British government decision at the end of the Second World War. Completing the programme is judged beneficial to the Royal Navy. The detailed case belongs to the earlier alternate-carrier-programme conversation with Drach.