Modify `applyAction` to allow alling action on page close via `navigator.sendBeacon` or `keepalive`

[cacabo]

https://developer.mozilla.org/en-US/docs/Web/API/Navigator/sendBeacon

One use case: calling a specific action or writing to a stream when user closes a page.

Currently, there is no ergonomic way to hook OSDK requests into these networking primitives.