src/vs/platform/userDataSync/common/extensionsSync.ts/ExtensionsSynchroniser/hasLocalData
class ExtensionsSynchroniser:	async hasLocalData(): Promise<boolean> {
		try {
			const { localExtensions } = await this.localExtensionsProvider.getLocalExtensions(this.syncResource.profile);
			if (localExtensions.some(e => e.installed || e.disabled)) {
				return true;
			}
		} catch (error) {
			/* ignore error */
		}
		return false;
	}