microsoft/vscode-remote-release#511

The panel currently exposes a `disposables` protected member. In order to catch possible leaks of disposables, we should extend `Disposable` instead

Many `Promise.resolve(null)` should actually be `Promise.resolve(void 0)`. In other cases, we were missing a null return annotation.

We compile using the alwaysStrict flag so these directives are not needed

This part removes most `use strict` directives that are right after the file header

#53526

#38746

fixes #38746

This reverts commit 27256832 which turns out did not break the import of vs/nls

This reverts commit 7de696a2.

Seems to have broken loading vs/nls in at least one case in insiders

Don't use this import form in places where it is not needed. This prevents us from correctly detecting duplicate imports

fixes #35021