test_runner: change default behavior of hookSignal option

Author: mete0rfish

lib/internal/test_runner/harness.js

@@ -297,7 +297,7 @@ function setupProcessState(root, globalOptions) {
   process.on('uncaughtException', exceptionHandler);
   process.on('unhandledRejection', rejectionHandler);
   process.on('beforeExit', exitHandler);
-  if (globalOptions.isTestRunner || globalOptions.hookSignal === true) {
+  if (globalOptions.isTestRunner && globalOptions.hookSignal !== true) {
     process.on('SIGINT', terminationHandler);
     process.on('SIGTERM', terminationHandler);
   }

lib/internal/test_runner/runner.js

@@ -593,7 +593,7 @@ function run(options = kEmptyObject) {
     argv = [],
     cwd = process.cwd(),
     rerunFailuresFilePath,
-    hookSignal = false,
+    hookSignal = true,
   } = options;
 
   if (files != null) {