Details arrow in the node edit form sidebar is not vertically centered

Problem/Motivation

On the node edit form, the sidebar accordions (Translation, URL alias) show the details arrow above the vertical center of the summary.

Steps to reproduce:

1. Use the Default Admin theme as the administration theme.
2. Edit a node that has the path and content translation fields.
3. Look at the arrows next to "URL alias" and "Translation" in the sidebar.

The summary is 88px high. The arrow center is at 20px from the top. The title line center is at 32px.

Cause: css/components/edit-form.css sets inset-block-start: var(--admin-space-density-xl, var(--admin-space-xl)) on .details__summary::before inside .entity-meta > .accordion__item. The base rule in details.css uses inset-block-start: 50% with margin-block-start: calc(var(--admin-space-m) / -2). The fixed offset replaces the 50% value, so the arrow sits 12px above the title line.

Proposed resolution

Remove the &::before rule from edit-form.pcss.css and edit-form.css. The arrow then uses the base position from details.css.

Remaining tasks

• Review.

Notes

Generated with the help of an LLM.