UI Samples: sample files not visible with the Lumo theme

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Hi,

I’ve run into an issue on the UI Samples website. When the Lumo theme is selected, the sample files aren’t displayed. With the Aura theme, the files show up as expected.

Steps to reproduce:

  1. Open the UI Samples website
  2. Switch the theme to Lumo
  3. Open any sample and check its files

Expected: the files are visible, the same as with Aura.
Actual: the files are not shown.

I’ve attached screenshots of both themes for comparison. Could you take a look?