Extension starts payments even before page load

[sidvishnoi]

In Chrome, during prerendering, the extension starts checking/creating payments while we're typing URL in address bar. We should start the sessions/fetching only after page load, not during prerender.

If we change the URL after typing (before hitting enter), the payments continue as if tab was never closed.

[raducristianpopa]

https://groups.google.com/a/chromium.org/g/chromium-extensions/c/1ikOwxWiU_g