refresh SWR images only when checks finish

Keep periodic/status-driven SWR image reloads disabled, but refresh the SWR report when swr.run.finished or swr.report.changed events arrive so newly generated images are loaded once via updated timestamps.

public/app.js

@@ -4744,9 +4744,10 @@ function connectEvents() {
   });
   eventSource.addEventListener("swr.run.finished", async () => {
     await refreshStatus();
+    await refreshSwrReport();
   });
   eventSource.addEventListener("swr.report.changed", async () => {
-    // SWR images are intentionally not auto-reloaded to avoid repeated browser fetches.
+    await refreshSwrReport();
   });
   eventSource.addEventListener("plugin.provider.changed", async () => {
     await refreshPlugins();