chore: added tracking id to HCA 'Request File Manifest' index ExportMethod (#4202)

* chore: added tracking id to HCA 'Request File Manifest' index export button (#4196)

* chore: corrected typo in test id (#4196)

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Co-authored-by: David Rogers <dave@clevercanary.com>

Author: Jonah Paten

explorer/app/viewModelBuilders/azul/hca-dcp/common/viewModelBuilders.ts

@@ -976,6 +976,7 @@ export const buildExportMethodManifestDownload = (
       "Request a file manifest for the current query containing the full list of selected files and the metadata for each file.",
     route: ROUTE_MANIFEST_DOWNLOAD,
     title: "Download a File Manifest with Metadata for the Selected Data",
+    trackingId: "button-request-file-manifest",
   };
 };