Make `onDropIntoEditor` api public

It appears 0.34.0 added enableDropIntoEditor but there is no documentation for onDropIntoEditor on https://microsoft.github.io/monaco-editor/api/index.html

E.g. how do I prevent the default behavior? This doesn't work (I think dataTransfer can only be changed in dragstart)

editor.onDropIntoEditor((drop) => {
  let { event: e } = drop;
  e.dataTransfer.clearData();
  e.dataTransfer.setData('text/plain', 'updated');
});

I'm currently implementing a markdown editor and want file drag & drop like GitHub. So I need to be able to override the default behavior so that I can instead insert something like (that's what GitHub does, I want it slightly different)

![Uploading image.jpg…]()

Playground is also behaving weird and tries to navigate when you drop an URL:

let editor = monaco.editor.create(document.getElementById('container'), {
    value: "function hello() {\n\talert('Hello world!');\n}",
    language: 'javascript',
    enableDropIntoEditor: true
});

editor.onDropIntoEditor((drop) => {
  let { event: e } = drop;
  e.dataTransfer.clearData();
  e.dataTransfer.setData('text/plain', 'updated');
});

Screencast from 11.10.2022 11:04:35.webm

It did insert /monaco-editor/playground.html (not the full dropped thing) into the editor though.

Even better, dropping files will just trigger a download 😄 . But not always, sometimes it drops the path instead. But not always. This is so weird to see in my Electron app. Most of the times dropping a file seemingly does not (because download/navigation is prevented) but sometimes it drops the file path. In the cases where seemingly nothing happened I also don't get the onDropIntoEditor event. Idk if this code is also in Monaco, but this looks crazy? Almost like having race conditions on purpose? https://github.com/microsoft/vscode/blob/e531b8e963806dfadbd73b10c02785c75ffb8cab/src/vs/editor/contrib/dropIntoEditor/browser/dropIntoEditorContribution.ts#L69-L108 Without fully understanding what it does this would definitely explain the inconsistent behavior I'm seeing.

Looks like this turned into bug reports now