Add onLongPress option to DropdownMenuItem

[Colton127]

No description provided.

[AhmedLSayed9]

I'm going to close this for now — dropdown menu items are meant to be simple select-and-go interactions, and adding an onLongPress callback would introduce a hidden gesture that most users wouldn't expect or discover. For cases where this kind of interaction is needed, wrapping the child widget in a GestureDetector should work well enough.

Also worth noting: the current implementation doesn't call _handleOnTap on long press while it should do.

That said, if you have a specific use case in mind, I'd be happy to hear about it — feel free to open an issue describing the scenario and we can revisit.