chore(web): improve drop shadow on three-dots icon (#3835)

web/src/app.css

@@ -61,7 +61,7 @@ input:focus-visible {
 }
 
 .icon-white-drop-shadow {
-  filter: drop-shadow(1px 1px 1px rgba(0, 0, 0, 0.8));
+  filter: drop-shadow(0 0 1px rgba(0, 0, 0, 0.8));
 }
 
 @layer utilities {