This sounds like an attempt to be political. It’s the most Claudius-like Hamlet has sounded the entire play. It is formal language, government speech. Occurrents? Solicited? Hamlet has not spoken like this before now. Has he stepped into his rightful place as king just for a moment before he dies?
He could just as easily have said, “Tell him what happened” but he doesn’t he begins this Claudius-like sentence and then seemingly gives up halfway through. He does not have time to make a kingly speech. Death is breathing hot on his neck. He no longer has time for occurrents and solicited things. His last words can’t be these. His last words are coming and they are much better words than these.