src/vs/workbench/browser/parts/views/viewsViewlet.ts/FilterViewPaneContainer/onDidAddViewDescriptors
class FilterViewPaneContainer:	protected override onDidAddViewDescriptors(added: IAddedViewDescriptorRef[]): ViewPane[] {
		const panes: ViewPane[] = super.onDidAddViewDescriptors(added);
		for (let i = 0; i < added.length; i++) {
			if (this.constantViewDescriptors.has(added[i].viewDescriptor.id)) {
				panes[i].setExpanded(false);
			}
		}
		// Check that allViews is ready
		if (this.allViews.size === 0) {
			this.updateAllViews(this.viewContainerModel.activeViewDescriptors);
		}
		return panes;
	}