src/vs/workbench/contrib/terminal/browser/terminalFindWidget.ts/TerminalFindWidget/_onFocusTrackerFocus
class TerminalFindWidget:	protected _onFocusTrackerFocus() {
		const instance = this._terminalService.activeInstance;
		if (instance) {
			instance.notifyFindWidgetFocusChanged(true);
		}
		this._findWidgetFocused.set(true);
	}