refactor(web): rename PendingTokenization as TransitionEdge, add doc-comments 🚂#15095

jahorton merged 2 commits intoepic/autocorrectkeymanapp/keyman:epic/autocorrectfrom

refactor/web/rename-and-doc-pending-tokenizationkeymanapp/keyman:refactor/web/rename-and-doc-pending-tokenizationCopy head branch name to clipboard