Environment settings objects used when fetching a module worker script graph are still wrong

[nicolo-ribaudo]

Re-reading #9520 to give consistent names to the various "environment settings object" parameters, I noticed that the logic is still wrong.

• Before that PR, the top-level worker module script was fetched with outside settings and its settings object was set to inside settings. Then, all its dependencies where fetched with inside settings and their settings object was inside settings.
• After that PR, all its dependencies are fetched with outide settings and their settings object is outside settings.

where outside settings and inside settings are defined in https://html.spec.whatwg.org/#worker-processing-model

The settings object of all the dependencies should be inside settings instead, while keeping the fetch client as outside settings.

I will open a PR after #9530 is merged, assuming that it will happen soon.

(fyi @allstarschh)