e2e: use published @executor-js/emulate 0.8.1 for invited members

Bump @executor-js/emulate from 0.7.x to 0.8.1, which creates a pending
organization membership on invite (matching real WorkOS). The members-page
scenario now asserts invited people appear as pending Invited members, dropping
the need for a local emulator patch.

Author: RhysSullivan