<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" width="16">
  <g class="jp-icon3" fill="#616161">
    <path d="M12 2.02c-5.51 0-9.98 4.47-9.98 9.98s4.47 9.98 9.98 9.98 9.98-4.47 9.98-9.98S17.51 2.02 12 2.02zm0 17.96c-4.4 0-7.98-3.58-7.98-7.98S7.6 4.02 12 4.02 19.98 7.6 19.98 12 16.4 19.98 12 19.98zM12.75 5l-4.5 8.5h3.14V19l4.36-8.5h-3z"/>
  </g>
</svg>

Switch to solid version of offline bolt icon.
Switch to solid version of offline bolt icon.

The solid version is more readable, and because it is more similar to the busy icon, indicates better that execution will not be immediate (i.e., it’s more similar to the busy state than to the idle state).