src/vs/workbench/contrib/notebook/browser/viewParts/notebookKernelQuickPickStrategy.ts/KernelPickerMRUStrategy/_selecteKernel
class KernelPickerMRUStrategy:	protected override _selecteKernel(notebook: NotebookTextModel, kernel: INotebookKernel): void {
		const currentInfo = this._notebookKernelService.getMatchingKernel(notebook);
		if (currentInfo.selected) {
			// there is already a selected kernel
			this._notebookKernelHistoryService.addMostRecentKernel(currentInfo.selected);
		}
		super._selecteKernel(notebook, kernel);
		this._notebookKernelHistoryService.addMostRecentKernel(kernel);
	}