src/vs/workbench/contrib/notebook/common/notebookOptions.ts/NotebookOptions/computeBottomToolbarOffset
class NotebookOptions:	computeBottomToolbarOffset(totalHeight: number, viewType: string) {
		const { bottomToolbarGap, bottomToolbarHeight } = this.computeBottomToolbarDimensions(viewType);

		return totalHeight
			- bottomToolbarGap
			- bottomToolbarHeight / 2;
	}