Blaze gives up if it has spent a large fraction of the invocation's wall time doing full GCs.

This is controlled by the new option `--gc_churning_threshold` whose default value of `100` effectively means "never give up for this reason" i.e. is the old behavior of Blaze.

PiperOrigin-RevId: 744337952

Author: Googler

third_party/bazel/src/main/protobuf/failure_details.proto

@@ -356,6 +356,12 @@ message Crash {
     //
     // See --gc_thrashing_threshold and --gc_thrashing_limits.
     GC_THRASHING = 3;
+
+    // Blaze gave up and pretended it OOM'd because it has spent too much of the
+    // invocation wall time doing full GCs.
+    //
+    // See --gc_churning_threshold.
+    GC_CHURNING = 4;
   }
 
   // If Blaze OOM'd (code = CRASH_OOM), the category of cause of that OOM.