Description

Not all themes support borders, so it can be confusing when a panel labeled Border and Shadow has no border controls.
I'm not sure if this is a bug, it felt unexpected to me, but I understand that consistency on the panel labels is also important.

Step-by-step reproduction instructions

On WordPress 6.5 alpha:
Activate a classic theme like Twenty Sixteen
In the block editor, add an image block.
Open the block settings panel, locate the "Border and Shadow" panel.
Now add a button:
Open the block settings panel, locate the "Border and Shadow" panel.

Compare the two experiences.

Screenshots, screen recording, code snippet

Environment info

WordPress 6.5-alpha-57580

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