fix(core): fix runaway batch runner

packages/nx/src/tasks-runner/batch/run-batch.ts

@@ -125,3 +125,7 @@ process.on('message', async (message: BatchMessage) => {
     }
   }
 });
+
+process.on('SIGTERM', () => {
+  process.exit(0);
+});

packages/nx/src/tasks-runner/forked-process-task-runner.ts

@@ -96,6 +96,7 @@ export class ForkedProcessTaskRunner {
         p.on('message', (message: BatchMessage) => {
           switch (message.type) {
             case BatchMessageType.CompleteBatchExecution: {
+              p.kill('SIGTERM');
               res(message.results);
               break;
             }