Merge pull request #42570 from dominictb/fix/42111

fix: resolve root url for video thumbnail

Author: rlinoz

src/components/HTMLEngineProvider/HTMLRenderers/VideoRenderer.tsx

@@ -18,7 +18,7 @@ function VideoRenderer({tnode, key}: VideoRendererProps) {
     const attrHref = htmlAttribs.href || htmlAttribs[CONST.ATTACHMENT_SOURCE_ATTRIBUTE] || '';
     const sourceURL = tryResolveUrlFromApiRoot(attrHref);
     const fileName = FileUtils.getFileName(`${sourceURL}`);
-    const thumbnailUrl = htmlAttribs[CONST.ATTACHMENT_THUMBNAIL_URL_ATTRIBUTE];
+    const thumbnailUrl = tryResolveUrlFromApiRoot(htmlAttribs[CONST.ATTACHMENT_THUMBNAIL_URL_ATTRIBUTE]);
     const width = Number(htmlAttribs[CONST.ATTACHMENT_THUMBNAIL_WIDTH_ATTRIBUTE]);
     const height = Number(htmlAttribs[CONST.ATTACHMENT_THUMBNAIL_HEIGHT_ATTRIBUTE]);
     const duration = Number(htmlAttribs[CONST.ATTACHMENT_DURATION_ATTRIBUTE]);