Use comboBoxRenderer from lit-vaadin-helpers (#9201)

src/components/device/ha-device-picker.ts

@@ -33,6 +33,7 @@ import { PolymerChangedEvent } from "../../polymer-types";
 import { HomeAssistant } from "../../types";
 import "../ha-combo-box";
 import type { HaComboBox } from "../ha-combo-box";
+import { ComboBoxLitRenderer } from "lit-vaadin-helpers";
 
 interface Device {
   name: string;
@@ -44,27 +45,18 @@ export type HaDevicePickerDeviceFilterFunc = (
   device: DeviceRegistryEntry
 ) => boolean;
 
-const rowRenderer = (root: HTMLElement, _owner, model: { item: Device }) => {
-  if (!root.firstElementChild) {
-    root.innerHTML = `
-    <style>
-      paper-item {
-        margin: -10px 0;
-        padding: 0;
-      }
-    </style>
-    <paper-item>
-      <paper-item-body two-line="">
-        <div class='name'>[[item.name]]</div>
-        <div secondary>[[item.area]]</div>
-      </paper-item-body>
-    </paper-item>
-    `;
-  }
-
-  root.querySelector(".name")!.textContent = model.item.name!;
-  root.querySelector("[secondary]")!.textContent = model.item.area!;
-};
+const rowRenderer: ComboBoxLitRenderer<Device> = (item) => html`<style>
+    paper-item {
+      margin: -10px 0;
+      padding: 0;
+    }
+  </style>
+  <paper-item>
+    <paper-item-body two-line>
+      ${item.name}
+      <span secondary>${item.area}</span>
+    </paper-item-body>
+  </paper-item>`;
 
 @customElement("ha-device-picker")
 export class HaDevicePicker extends SubscribeMixin(LitElement) {