src/vs/workbench/services/views/browser/viewDescriptorService.ts/ViewDescriptorService/isViewContainerRemovedPermanently
class ViewDescriptorService:	isViewContainerRemovedPermanently(viewContainerId: string): boolean {
		return this.isGeneratedContainerId(viewContainerId) && !this.viewContainersCustomLocations.has(viewContainerId);
	}