Match runs empty state on error detail page to dashboards style

Replace the small inline 'No runs found for this error.' paragraph with
a centered icon + dimmed text block, mirroring the empty state in the
Query/Dashboards page. Uses IconBugFilled to tie visually to the errors
context.

Author: D-K-P

apps/webapp/app/routes/_app.orgs.$organizationSlug.projects.$projectParam.env.$envParam.errors.$fingerprint/route.tsx

@@ -1,7 +1,11 @@
 import { type LoaderFunctionArgs, type ActionFunctionArgs, json } from "@remix-run/server-runtime";
 import { type MetaFunction, useFetcher, useRevalidator } from "@remix-run/react";
 import { BellAlertIcon } from "@heroicons/react/20/solid";
-import { IconAlarmSnooze as IconAlarmSnoozeBase, IconCircleDotted } from "@tabler/icons-react";
+import {
+  IconAlarmSnooze as IconAlarmSnoozeBase,
+  IconBugFilled,
+  IconCircleDotted,
+} from "@tabler/icons-react";
 import { parse } from "@conform-to/zod";
 import { z } from "zod";
 import { ErrorStatusBadge } from "~/components/errors/ErrorStatusBadge";
@@ -506,9 +510,12 @@ function ErrorGroupDetail({
                 additionalTableState={{ errorId: ErrorId.toFriendlyId(fingerprint) }}
               />
             ) : (
-              <Paragraph variant="small" className="p-4 text-text-dimmed">
-                No runs found for this error.
-              </Paragraph>
+              <div className="flex flex-1 flex-col items-center justify-center gap-3">
+                <IconBugFilled className="size-16 text-charcoal-650" />
+                <Paragraph className="max-w-32 text-center text-text-dimmed">
+                  No runs found for this error.
+                </Paragraph>
+              </div>
             )}
           </div>
         </div>