Remove `cursorless-engine` dependency on `node-common`

[pokey]

https://github.com/cursorless-dev/cursorless/blob/b9590b4e9f34c5133d90bcb6c0685036b50808d9/packages/cursorless-engine/package.json#L25

Until we remove that line, we'll get node stuff creeping into the engine, even if we add a lint rule to disallow node