Allow to re-trigger completed builds with 0 tasks

Fixes cirruslabs/cirrus-ci-docs#972 (comment)

src/components/builds/BuildDetails.tsx

@@ -209,7 +209,7 @@ function BuildDetails(props: Props) {
   );
 
   const canBeReTriggered =
-    (build.status === 'FAILED' || build.status === 'ERRORED') &&
+    (build.status === 'FAILED' || build.status === 'ERRORED' || build.status === 'COMPLETED') &&
     hasWritePermissions(build.repository.viewerPermission) &&
     build.latestGroupTasks &&
     build.latestGroupTasks.length === 0;