My team has hired more than one person that immediately went on leave. We literally paid them for months before they started. We did this knowingly, and I cite this with other candidates as a concrete example of how well we treat our employees.

Guess what, in our industry the people that are planning to have kids are also very likely to be senior and experienced. They're hard to recruit. Consider leave as part of the cost of hiring good people.

If you're not doing things like this, you're not actually competing for top talent.