appview/notify: merge `NewPullClosed/Merged/Reopen` to `NewPullState`
same to `NewIssueState`, we can determine the detailed event type fromlatest pull stateSigned-off-by: Seongmin Lee <git@boltless.me>
authored by Seongmin Lee and committed by Tangled 4 months ago 4791c0d8 9892a080