Send nonFatalBugReport when unexpected exception occurs.

We can recover in this situation.

Context: bazelbuild@8adba4a
PiperOrigin-RevId: 480062429
Change-Id: I93bf1eabeddd57266de02538419240cda76cc45e

src/main/java/com/google/devtools/build/lib/skyframe/SkyframeErrorProcessor.java

@@ -570,7 +570,7 @@ private static DetailedExitCode sendBugReportAndCreateUnknownExecutionDetailedEx
       EvaluationResult<? extends SkyValue> result, Throwable cause, BugReporter bugReporter) {
     // An undetailed exception means we may incorrectly attribute responsibility for the failure:
     // we need to fix that.
-    bugReporter.sendBugReport(
+    bugReporter.sendNonFatalBugReport(
         new IllegalStateException(
             "action terminated with unexpected exception with result " + result, cause));
     String message =