fix: restore dashboard widget transparency

packages/widgets/src/traefik/component.module.css

@@ -39,7 +39,7 @@
   gap: clamp(5px, 2cqi, 8px);
   padding: clamp(6px, 3cqi, 10px);
   border-radius: var(--mantine-radius-sm);
-  background: light-dark(var(--mantine-color-gray-0), var(--mantine-color-dark-6));
+  background-color: transparent;
 }
 
 .metricIcon {
@@ -75,7 +75,7 @@
 .protocolCard {
   min-width: 0;
   padding: clamp(6px, 3cqi, 10px);
-  border: 1px solid light-dark(var(--mantine-color-gray-2), var(--mantine-color-dark-4));
+  border: 1px solid rgb(from var(--mantine-color-default-border) r g b / calc(var(--opacity, 1) * 0.45));
   border-radius: var(--mantine-radius-sm);
 }