Two issues caused browser test failures after the event replay fix:
1. `markEventHandledForElement` used the event object as a WeakMap key, but
`DebugElement.triggerEventHandler` can pass null or primitive values as the
event argument. Added an early return for non-object values.
2. Registering a separate `domListener` closure with `renderer.listen` instead of
`wrappedListener` caused `DebugElement.triggerEventHandler` to invoke the
handler twice: once via `this.listeners` (which holds `wrappedListener`) and
once via Zone.js's `eventListeners` (which holds the unwrapped `domListener`).
The existing dedup logic in `triggerEventHandler` checks if the unwrapped
Zone.js listener is already in `invokedListeners`, but with two different
function objects that check always fails.
Replaced the `domListener` wrapper with a property (`__ngNativeEl__`) stored
directly on `wrappedListener`. `wrapListenerIn_markDirtyAndPreventDefault` reads
this property and calls `markEventHandledForElement` when the listener fires,
while `renderer.listen` receives the same `wrappedListener` function that
Angular stores in `lCleanup`, preserving the dedup invariant.
3583c01bf9