It's easier to write correct code when you know certain state changes always entail a full reload. Extension installs are rare enough and VSCode reloads quick e

It's easier to write correct code when you know certain state changes always entail a full reload. Extension installs are rare enough and VSCode reloads quick enough that the tradeoff seems sensible. This change introduces a new "extensions changed" event that extension points must (correctly) implement, so the cost is more code i.e. more opportunity for bugs. The essential question is of course, how much more, and I have no answer to that.