Hide generate_time(ms) metric temporarily (#6314)

Due to
pytorch/executorch#8576 (comment)

As we cannot go back and update historical data, we could hide
`generate_time(ms)` for a week or two till there are new data. Maybe it
could also be hidden permanently if we decide to keep only TPS metric.

### Preview


https://torchci-git-fork-huydhn-hide-generate-time-0f0c4f-fbopensource.vercel.app/benchmark/llms?repoName=pytorch%2Fexecutorch

Author: huydhn

torchci/components/benchmark/llms/SummaryPanel.tsx

@@ -133,7 +133,7 @@ export function SummaryPanel({
   ];
 
   const hasMode = data.length > 0 && "mode" in data[0] ? true : false;
-  if (hasMode) {
+  if (hasMode && benchmarkName === "TorchCache Benchmark") {
     columns.push({
       field: "mode",
       headerName: "Mode",

torchci/components/benchmark/llms/common.tsx

@@ -18,6 +18,9 @@ export const EXCLUDED_METRICS: string[] = [
   "cold_compile_time(s)",
   "warm_compile_time(s)",
   "speedup_pct",
+  // TODO (huydhn): Hide generate_time(ms) metric temporarily because of
+  // https://github.com/pytorch/executorch/issues/8576#issuecomment-2669706120
+  "generate_time(ms)",
 ];
 export const DEFAULT_MODEL_NAME = "All Models";
 export const SCALE = 2;