no issue
- renamed "Update" to "Unpublish" or "Unschedule" to match the available actions
- renamed "Save" to "Update" and made it always visible but disabled when there are no unsaved changes
- switched <Editor::PublishManagement> to a provider component and extracted `<Editor::PublishButtons>`
- allows for the management flow to wrap other UI elements and have the yielded actions passed down so the publish/update flow can be opened from more than just the publish/unschedule/unpublish buttons
- added link to "Sent" in editor status that opens the update flow for email-only posts
Co-authored-by: Peter Zimon <peter.zimon@gmail.com>
