Fix angular event handling (#2)

* wip: remove on from output variables

* remove on also on emit event

* wip on test

* add event child props

* add e2e test

* Event listener e2e test

* clean up

* add changeset

.changeset/six-ghosts-exercise.md

@@ -0,0 +1,5 @@
+---
+'@builder.io/mitosis': minor
+---
+
+Remove on prefix on angulare event emits to be aligned with Angular Style Rule 05-16: Don't Prefix Output Properties