List view: empty settings menus for non-editable items instead of a lock icon

[ramonjd]

Description

Block settings and other actions can be accessed via an ellipsis menu for items in the list view.

When a block is locked there are no actions/settings, however an empty drop down menu still appears (in BlockSettingsMenu).

Previously there was a lock icon. See:

gutenberg/packages/block-editor/src/components/list-view/block-select-button.js

Line 64 in 578f7d0

const shouldShowLockIcon = isLocked && ! isContentOnly;

Step-by-step reproduction instructions

1. Go to any page or post in the post editor
2. In the Post/Page settings on the right, activate "Show template"
3. Open the list view and click on the ellipsis menu of non-editable items, e.g., template parts, content or title blocks
4. Observe that the menu is empty

Screenshots, screen recording, code snippet

2024-06-06.14.22.03.mp4

Environment info

Latest Gutenberg trunk on WP 6.6-beta1-58338

Also on 6.6-beta1-58338 with Gutenberg deactivated

Please confirm that you have searched existing issues in the repo.

Yes

Please confirm that you have tested with all plugins deactivated except Gutenberg.

Yes