Suspend does not work with Graal-based Ydoc

[hubertp]

When testing issues with suspend using the default Node-based Ydoc, I decided to test Graal-based Ydoc version as well.

Turns out the results are even worse than the current state:

• Node-based Ydoc has issues only with Windows, as per ticket
• waking up from suspend does not work at all when switched to Graal-based Ydoc

Connection is closed, Language Server is shutdown completely and there is no way to recover other than closing and reopening the project from scratch,