src/vs/workbench/browser/parts/views/viewPane.ts/ViewPane/updateActionsVisibility
class ViewPane:	private updateActionsVisibility(): void {
		if (!this.headerContainer) {
			return;
		}
		const shouldAlwaysShowActions = this.configurationService.getValue<boolean>('workbench.view.alwaysShowHeaderActions');
		this.headerContainer.classList.toggle('actions-always-visible', shouldAlwaysShowActions);
	}