src/vs/workbench/browser/parts/views/viewPane.ts/ViewPane/calculateTitle
class ViewPane:	private calculateTitle(title: string): string {
		const viewContainer = this.viewDescriptorService.getViewContainerByViewId(this.id)!;
		const model = this.viewDescriptorService.getViewContainerModel(viewContainer);
		const viewDescriptor = this.viewDescriptorService.getViewDescriptorById(this.id);
		const isDefault = this.viewDescriptorService.getDefaultContainerById(this.id) === viewContainer;

		if (!isDefault && viewDescriptor?.containerTitle && model.title !== viewDescriptor.containerTitle) {
			return `${viewDescriptor.containerTitle}: ${title}`;
		}

		return title;
	}