events: inline iterationCondition hybrid dispatch closure

While more readable, the removed closure overhead unlocks 10-20% in
eventtarget.js benchmark.

Signed-off-by: Szymon Łągiewka <slagiewka@users.noreply.github.com>
PR-URL: https://github.com/nodejs/node/pull/64473
Reviewed-By: Chemi Atlow <chemi@atlow.co.il>