Molecular dynamics simulation of dynamic migration of <inline-formula><tex-math id="M3">\begin{document}$\boldsymbol {\langle 100\rangle} $\end{document}</tex-math><alternatives><graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="24-20230651_M3.jpg"/><graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="24-20230651_M3.png"/></alternatives></inline-formula> interstitial dislocation loops under (010) surfaces of pure W and W containing helium impurity