Fix: Remove bullet points from markdown task list items which includes checkboxes

[anandakbari]

Summary

Fixes issue addressed in #3826 where markdown task list items were displaying both bullet points and checkboxes in presentation view.

Changes Made

• Added CSS rule .reveal li:has(> input[type="checkbox"]) { list-style: none; } to remove bullet points from task list items
• Applied the fix to the main theme template (css/theme/template/theme.scss)

Before/After

Before: Task list items showed both bullets (•) and checkboxes
Screenshot

After: Task list items show only checkboxes, no bullets
Screenshot

Technical Details

• Uses the :has() pseudo-class to target <li> elements that contain checkbox inputs
• The selector li:has(> input[type="checkbox"]) ensures only direct child checkboxes are affected
• Maintains compatibility across all reveal.js themes

Tests Performed

• Verified fix works in multiple themes
• Tested with both checked [x] and unchecked [ ] task items

[madukan]

Looks good to me @anandakbari