Migrate tab-group to webawesome (#26951)

src/components/ha-tab-group-tab.ts

@@ -0,0 +1,42 @@
+import Tab from "@home-assistant/webawesome/dist/components/tab/tab";
+import { css, type CSSResultGroup } from "lit";
+import { customElement } from "lit/decorators";
+
+@customElement("ha-tab-group-tab")
+export class HaTabGroupTab extends Tab {
+  static get styles(): CSSResultGroup {
+    return [
+      Tab.styles,
+      css`
+        :host {
+          font-size: var(--ha-font-size-m);
+          --wa-color-brand-on-quiet: var(
+            --ha-tab-active-text-color,
+            var(--primary-color)
+          );
+2
+          --wa-color-neutral-on-quiet: var(--wa-color-brand-on-quiet);
+          opacity: 0.8;
+
+          color: inherit;
+        }
+
+        :host([active]:not([disabled])) {
+          opacity: 1;
+        }
+
+        @media (hover: hover) {
+          :host(:hover:not([disabled]):not([active])) .tab {
+            color: var(--wa-color-brand-on-quiet);
+          }
+        }
+      `,
+    ];
+  }
+}
+
+declare global {
+  interface HTMLElementTagNameMap {
+    "ha-tab-group-tab": HaTabGroupTab;
+  }
+}