Enable `experimental_collect_load_average_in_profiler` by deafult.

This flag add system load average to profile.

PiperOrigin-RevId: 474282681
Change-Id: If8e625798351c2833136cc7ad2cd70694395803e
diff --git a/src/main/java/com/google/devtools/build/lib/runtime/CommonCommandOptions.java b/src/main/java/com/google/devtools/build/lib/runtime/CommonCommandOptions.java
index 672a6d9..f09cb32 100644
--- a/src/main/java/com/google/devtools/build/lib/runtime/CommonCommandOptions.java
+++ b/src/main/java/com/google/devtools/build/lib/runtime/CommonCommandOptions.java
@@ -318,7 +318,7 @@
 
   @Option(
       name = "experimental_collect_load_average_in_profiler",
-      defaultValue = "false",
+      defaultValue = "true",
       documentationCategory = OptionDocumentationCategory.UNDOCUMENTED,
       effectTags = {OptionEffectTag.AFFECTS_OUTPUTS, OptionEffectTag.BAZEL_MONITORING},
       help = "If enabled, the profiler collects the system's overall load average.")