perf(ci): speed up running the startup benchmark

.github/scripts/run_macrobenchmarks.sh

@@ -21,10 +21,11 @@ run_benchmark() {
   adb shell rm /sdcard/Download/*.perfetto-trace || true
   adb shell rm /sdcard/Download/*.txt || true
   
-  # Run only the Startup benchmark
+  # Run only the Startup Baseline Profile benchmark
   adb shell am instrument -w \
-    -e class com.google.samples.apps.nowinandroid.startup.StartupBenchmark \
+    -e class com.google.samples.apps.nowinandroid.startup.StartupBenchmark#startupPrecompiledWithBaselineProfile \
     -e androidx.benchmark.suppressErrors EMULATOR \
+    -e androidx.benchmark.profiling.mode none \
     -e no-isolated-storage true \
     -e additionalTestOutputDir /sdcard/Download \
     $BENCHMARK_PKG/$TEST_RUNNER

benchmarks/src/main/kotlin/com/google/samples/apps/nowinandroid/startup/StartupBenchmark.kt

@@ -61,7 +61,7 @@ class StartupBenchmark {
         metrics = BaselineProfileMetrics.allMetrics,
         compilationMode = compilationMode,
         // More iterations result in higher statistical significance.
-        iterations = 20,
+        iterations = 5,
         startupMode = COLD,
         setupBlock = {
             pressHome()