* Expose preventDefault and stopPropagation for DOM events
All EventHandler, EventSpec, and EventChain can now carry these extra
"event_actions" that will be applied inside the frontend code when an event is
triggered from the DOM.
Fix#1621
Fix REF-675
* Test cases (and fixes) for "event_actions"
* form: from __future__ import annotations
for py38, py39 compat
* Revert overzealous merge conflict resolution
* test_client_storage: remove race conditions for cookie assignment
Poll for default timeout for cookies to appear in the controlled browser.
* Remove use of deprecated get_token and get_sid in core
Both reflex.app and reflex.state were still using deprecated methods, which
were throwing unsolvable warnings for end users.
* Remove deprecated router functions from integration tests
Mostly removing custom "token" var and replacing with
router.session.client_token.
Also replacing `get_query_params` and `get_current_page` usage as well.
* fix upload tests
Cannot pass substate as main app state, since it blocks us from accessing
"inherited vars"
* state: do NOT reset `router` to default
When calling `.reset` to reset state vars, do NOT reset the router data, as
that could mess up internal event processing.
