Assume a repository with two PRs on it (!1 and !2)

/main is protected by policy and requires build validation
This build validation exires, once main has changed
Build validation gets triggered on each new commit in the /feature branch

BUT Build validation does not restart itself, once it expired through changes in main.

So for all PRs had good build validaiton before a change in /main, have to be triggered again.

Is there a way to automatically trigger the build-validation of the other PRs?