fix: css tweaks

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

Author: hejsztynx

src/web/EnrichedText.css

@@ -272,8 +272,7 @@
   position: relative;
   list-style: none;
   pointer-events: none;
-  min-height: max(1lh, var(--et-checkbox-box-size, 24px)
-  );
+  min-height: max(1lh, var(--et-checkbox-box-size, 24px));
 }
 
 .et-view ul[data-type="checkbox"] > li > p {
@@ -297,6 +296,7 @@
 }
 
 .et-view ul[data-type="checkbox"] > li > label {
+  display: inline-flex;
   align-items: center;
   gap: 0;
   margin: 0;

src/web/EnrichedText.tsx

@@ -59,7 +59,7 @@ export const EnrichedText = memo(
 
     return (
       <>
-        <style>{mentionRulesCSS}</style>
+        {mentionRulesCSS ? <style>{mentionRulesCSS}</style> : null}
         <div
           ref={containerRef}
           style={finalStyle}