fix flaky test on embed share behaviour snowplow events (#48665)

* increase time tolerance to make tests less flaky on ci when CPU is under heavy load

* Update e2e/test/scenarios/sharing/public-sharing-embed-button-behavior.cy.spec.js

Co-authored-by: Uladzimir Havenchyk <125459446+uladzimirdev@users.noreply.github.com>

---------

Co-authored-by: Uladzimir Havenchyk <125459446+uladzimirdev@users.noreply.github.com>