We've allowed for auto importing moz- custom elements since Bug 1803678. This means that often custom elements will use moz- elements without explicitly importing them. This sometimes causes problems in Storybook, since the auto import logic doesn't apply there, and as of Storybook v7 all stories are lazily compiled. This patch ensures that we load all moz- elements and other reusable components up front to avoid display issues in domain specific component stories.
Differential Revision: https://phabricator.services.mozilla.com/D221702
29258bedd7