Clean up some usages of IDisposable[]

Part of #74250

- Extend `Disposable` in classes where it makes sense
- Use `DisposableStore` for lists of disposables
- Make `combinedDisposable` take arguments instead of an array (so that you can't pass in an array and then modify the array after the fact)

src/vs/code/electron-browser/sharedProcess/sharedProcessMain.ts

@@ -165,12 +165,12 @@ function main(server: Server, initData: ISharedProcessInitData, configuration: I
 			// update localizations cache
 			(localizationsService as LocalizationsService).update();
 			// cache clean ups
-			disposables.push(combinedDisposable([
+			disposables.push(combinedDisposable(
 				instantiationService2.createInstance(NodeCachedDataCleaner),
 				instantiationService2.createInstance(LanguagePackCachedDataCleaner),
 				instantiationService2.createInstance(StorageDataCleaner),
 				instantiationService2.createInstance(LogsDataCleaner)
-			]));
+			));
 			disposables.push(extensionManagementService as ExtensionManagementService);
 		});
 	});