src/vs/platform/actions/browser/menuEntryActionViewItem.ts/MenuEntryActionViewItem/updateTooltip
class MenuEntryActionViewItem:	override updateTooltip(): void {
		if (this.label) {
			const keybinding = this._keybindingService.lookupKeybinding(this._commandAction.id);
			const keybindingLabel = keybinding && keybinding.getLabel();

			const tooltip = this._commandAction.tooltip || this._commandAction.label;
			let title = keybindingLabel
				? localize('titleAndKb', "{0} ({1})", tooltip, keybindingLabel)
				: tooltip;
			if (!this._wantsAltCommand && this._menuItemAction.alt) {
				const altTooltip = this._menuItemAction.alt.tooltip || this._menuItemAction.alt.label;
				const altKeybinding = this._keybindingService.lookupKeybinding(this._menuItemAction.alt.id);
				const altKeybindingLabel = altKeybinding && altKeybinding.getLabel();
				const altTitleSection = altKeybindingLabel
					? localize('titleAndKb', "{0} ({1})", altTooltip, altKeybindingLabel)
					: altTooltip;
				title += `\n[${UILabelProvider.modifierLabels[OS].altKey}] ${altTitleSection}`;
			}
			this.label.title = title;
		}
	}