fix(dnd): add correct dragOverFromOutside behavior in week view

[achrafl0]

Hey,

This is an attempt to fix https://github.com/jquense/react-big-calendar/issues/2383.

The 2 issues I noticed were:

• The selectors were listening to the wrong event ( dragOver instead of dragOverFromOutside )
• The old dragOver code called the handleDrop which is not exactly true !

It's not breaking, as the old "dragOver" event was never emitted, so the code was never called (from my understanding)!

I'd love to have your feedback, and I'd be happy to add tests or better documentation if deemed necessary !

This is how it looks on the storybooks

https://github.com/jquense/react-big-calendar/assets/63306573/d8fbb4a2-80d9-4424-b344-950a6ec4c163

[cutterbl]

@achrafl0 I have to pull this code down and run it myself, but a quick look at you changes looks good. Give me a day or two to make sure there are no adverse effects.

[cutterbl]

@achrafl0 The issue I'm seeing right now occurs within that same Storybook example. There is an item there which you should not be able to drop on the calendar ("Draggable but not for calendar"). In current master it respects that in the week and day views. Attempting to drop on the timegrid does nothing. With your code it actually shows the slot preview and creates an event on drop.

[matthiaseigner]

Is there an update on this issue? We would also need the dragOver preview on the weeks view.

[cutterbl]

@matthiaseigner Just waiting on @achrafl0 to revise his PR for the feedback given.

[cutterbl]

@achrafl0 If you could please pull in latest changes so that I can review this again