src/vs/workbench/contrib/preferences/browser/keybindingsEditor.ts/KeybindingsEditor/onFocusChange
class KeybindingsEditor:	private onFocusChange(): void {
		this.keybindingFocusContextKey.reset();
		const element = this.keybindingsTable.getFocusedElements()[0];
		if (!element) {
			return;
		}
		if (element.templateId === KEYBINDING_ENTRY_TEMPLATE_ID) {
			this.keybindingFocusContextKey.set(true);
		}
	}