Improve onboarding backup restore (#23340)

* Improve onboarding backup restore

* Fix onboarding backup restore

* Fix restoring value in onboarding-restore-backup

hassio/src/components/hassio-upload-backup.ts

@@ -1,7 +1,7 @@
 import { mdiFolderUpload } from "@mdi/js";
 import type { TemplateResult } from "lit";
 import { html, LitElement } from "lit";
-import { customElement, state } from "lit/decorators";
+import { customElement, property, state } from "lit/decorators";
 import { fireEvent } from "../../../src/common/dom/fire_event";
 import "../../../src/components/ha-circular-progress";
 import "../../../src/components/ha-file-upload";
@@ -10,10 +10,12 @@ import { uploadBackup } from "../../../src/data/hassio/backup";
 import { extractApiErrorMessage } from "../../../src/data/hassio/common";
 import { showAlertDialog } from "../../../src/dialogs/generic/show-dialog-box";
 import type { HomeAssistant } from "../../../src/types";
+import type { LocalizeFunc } from "../../../src/common/translations/localize";
 
 declare global {
   interface HASSDomEvents {
     "backup-uploaded": { backup: HassioBackup };
+    "backup-cleared": void;
   }
 }
 
@@ -21,6 +23,8 @@ declare global {
 export class HassioUploadBackup extends LitElement {
   public hass?: HomeAssistant;
 
+  @property({ attribute: false }) public localize?: LocalizeFunc;
+
   @state() public value: string | null = null;
 
   @state() private _uploading = false;
@@ -32,13 +36,26 @@ export class HassioUploadBackup extends LitElement {
         .uploading=${this._uploading}
         .icon=${mdiFolderUpload}
         accept="application/x-tar"
-        label="Upload backup"
-        supports="Supports .TAR files"
+        .label=${this.localize?.(
+          "ui.panel.page-onboarding.restore.upload_backup"
+        ) || "Upload backup"}
+        .supports=${this.localize?.(
+          "ui.panel.page-onboarding.restore.upload_supports"
+        ) || "Supports .TAR files"}
+        .secondary=${this.localize?.(
+          "ui.panel.page-onboarding.restore.upload_drop"
+        ) || "Or drop your file here"}
         @file-picked=${this._uploadFile}
+        @files-cleared=${this._clear}
       ></ha-file-upload>
     `;
   }
 
+  private _clear() {
+    this.value = null;
+    fireEvent(this, "backup-cleared");
+  }
+
   private async _uploadFile(ev) {
     const file = ev.detail.files[0];