Fix run active file in terminal not wrapping with quotes

[dormesica]

Wait for processReady event before runnigs file.

This PR fixes #90415

[dormesica]

I have no idea why these piplines fail.
It seems like the Monaco Editor checks fail but I haven't touched it.

[nrayburn-tech]

@dormesica Chances are that the branch you were working on was failing already. It looks like the current master is passing, so if you update your branch to be in sync with master, your test should pass as well.

[Tyriar]

Is the reason this was failing because instance.shellLaunchConfig was not accurate until instance.processReady? Is the repro to run this without a terminal opened?

[dormesica]

@nrayburn-tech Just before submitting the merge request I pull the master brach and rebase my branch onto it. I'll try again.

@Tyriar The reason for the bug was indeed that instance.shellLaunchConfig was not ready. I was looking for a way to dermine when the TermianlInstance is ready and I encountered the processReady property.
It could be that I got the purpose of this property wrong, so I labeled the PR as WIP, in that case my bad 😬.

And yes, in order to reproduce the bug close all terminals and click on Run Active File.

[Tyriar]

Works great thanks! I created #90993 for me to follow up on maybe doing some refactoring to avoid this problem happening outside of terminalInstance.