fix(web): prevent insert-delete edit sequences from aliasing as substitution edits 🚂#15399

jahorton merged 1 commit intoepic/autocorrectkeymanapp/keyman:epic/autocorrectfrom

fix/web/prevent-insdel-sub-aliasingkeymanapp/keyman:fix/web/prevent-insdel-sub-aliasingCopy head branch name to clipboard