How do you know the vaccine is safe to take after having recovered from infection? That has never been studied in a rigorous way, recovered individuals were exc

How do you know the vaccine is safe to take after having recovered from infection? That has never been studied in a rigorous way, recovered individuals were excluded from the trials. People keep bringing up these studies and links to research that was conducted before the Delta variant became dominant. Are you all simply unaware that it's not relevant anymore?