refactor: duplicated css

Co-authored-by: Copilot Autofix powered by AI <175728472+Copilot@users.noreply.github.com>

Author: hejsztynx

src/web/EnrichedText.css

@@ -340,9 +340,7 @@
 
   width: var(--et-checkbox-box-size, 24px);
   height: var(--et-checkbox-box-size, 24px);
-  pointer-events: none;
   accent-color: var(--et-checkbox-box-color, #0000ff);
-
   /* disable checkbox press style as it's read-only */
   pointer-events: none;
   -webkit-tap-highlight-color: transparent;