This worked well for me, even though it resets on page refresh.

For anyone running into the same issue: Ctrl+Shift+I didn’t open DevTools in the Apps Script editor, but right-clicking the side menu -> Inspect did.

For reference, I put it here:

<div class="Kp2okb SQyOec" jsname="Iq1FLd" style="display:none; flex-basis:"