On with multiple clauses via 'or' does not allow 'from' clause.

Minimal repo case showing that separate `on` handlers works, but that two `on` handlers each with a `from` clause causes a "Expected commandList" error.

```html

behavior SeparateWorks
on first from #events
toggle [@hidden] on me
end
on second from #events
toggle [@hidden] on me
end
end
behavior FirstDoesntWork
-- No syntax error, but first function doesn't toggle
on first or second from #events
toggle [@hidden] on me
end
end
behavior SecondDoesntWork
-- No syntax error, but second button doesn't toggle
on first from #events or second
toggle [@hidden] on me
end
end


-- in a separate script so syntax error doesn't break other cases....
behavior Broken
on first from #events or second from #events
toggle [@hidden] on me
end
end

First
Second

• Separate Works - Initial


• Separate Works - Toggled


• Doesn't Work First - Initial


• Doesn't Work First - Toggled


• Doesn't Work Second - Initial


• Doesn't Work Second - Toggled


• Broken - Initial


• Broken - Toggled

```

Inizia con la riproduzione HTML minima e segui il parsing degli handler `on` di hyperscript contenenti `from` e `or`. Confronta gli handler separati funzionanti con le forme combinate che falliscono. Il lavoro è completato quando entrambi gli handler vengono analizzati senza l’errore `Expected commandList` e rispondono ai rispettivi eventi.

Scritto dal modello di indicizzazione a partire dal testo della issue.