This PR removes the hook in node-debug's auto attach, and uses only
js-debug auto attach. As referenced in the linked issues, this involves
removing `debug.javascript.usePreviewAutoAttach` and collapsing
`debug.node.autoAttach` into `debug.javascript.autoAttachFilter`. The
latter option gains a new state: `disabled`. Since there's no runtime
cost to having auto attach around, there is now no distinct off versus
disabled state.

The status bar item and the `Debug: Toggle Auto Attach` command now
open a quickpick, which looks like this:

![](https://memes.peet.io/img/20-09-9d2b6c0a-8b3f-4481-b2df-0753c54ee02b.png)

The current setting value is selected in the quickpick. If there is a
workspace setting for auto attach, the quickpick toggle the setting
there by default. Otherwise (as in the image) it will target the user
settings. The targeting is more explicit and defaults to the user
instead of the workspace, which should help reduce confusion (#97087).
Selecting the "scope change" item will reopen the quickpick in that
location.

Aside from the extra options for the `disabled` state in js-debug's
contributions, there's no changes required to it or its interaction
with debug-auto-launch.

Side note: I really wanted a separator between the states and the
scope change item, but this is not possible from an extension #74967.

Fixes #105883
Fixes microsoft/vscode-js-debug#732 (the rest of it)
Fixes #105963
Fixes #97087