fix: fix assement overview not choosing actuve subjects and improve styling

src/plugins/built-in/assessmentsOverview/OverviewIcon.svelte

@@ -0,0 +1,32 @@
+<script lang="ts">
+  import { OVERVIEW_ICON_PATHS, type OverviewIconName } from "./icons";
+
+  interface Props {
+    name: OverviewIconName;
+    class?: string;
+    size?: number;
+  }
+
+  let { name, class: className = "", size = 20 }: Props = $props();
+
+  const paths = $derived.by(() => {
+    const raw = OVERVIEW_ICON_PATHS[name];
+    return Array.isArray(raw) ? raw : [raw];
+  });
+</script>
+
+<svg
+  xmlns="http://www.w3.org/2000/svg"
+  fill="none"
+  viewBox="0 0 24 24"
+  stroke-width="1.5"
+  stroke="currentColor"
+  width={size}
+  height={size}
+  class="bsplus-overview-icon {className}"
+  aria-hidden="true"
+>
+  {#each paths as path, index (index)}
+    <path stroke-linecap="round" stroke-linejoin="round" d={path} />
+  {/each}
+</svg>