Auto-load seed url when replaying seeded crawls (#1786)

Closes #1787

- Crawls with only one seed will load viewing that seed URL
- URL list crawls with >1 URLs will continue to load the pages list as no
ReplayWeb.page enbed URL has been defined

Co-authored-by: sua yoo <sua@webrecorder.org>

frontend/src/pages/org/archived-item-detail/archived-item-detail.ts

@@ -683,6 +683,7 @@ export class ArchivedItemDetail extends TailwindElement {
           ? html`<div id="replay-crawl" class="aspect-4/3 overflow-hidden">
               <replay-web-page
                 source="${replaySource}"
+                url="${this.crawl.seedCount === 1 && this.crawl.firstSeed || ""}"
                 coll="${ifDefined(this.crawl.id)}"
                 config="${config}"
                 replayBase="/replay/"

frontend/src/replayWebPage.d.ts

@@ -5,6 +5,7 @@
  * @attr {String} replayBase
  * @attr {String} noSandbox
  * @attr {String} noCache
+ * @attr {String} url
  */
 class ReplayWebPage {}