Removed the black label from around the default labels in new label engine

[snipe]

This removes the blank line around the labels in the new label engine. This border was retained from the legacy label system, but doesn't make sense here, since the new system generates a PDF (instead of HTML), and we can't make those borders not show up in print in the PDF.

[what-the-diff]

PR Summary

• Modification in Label Formatting
  The method responsible for generating border labeling within the application was adjusted. The change ensures a sleek borderless appearance which essentially contributes to a cleaner and uncluttered UI.