fix(core): fix process being prevented from exiting (#29240)

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## Current Behavior
<!-- This is the behavior we have today -->

The db cleanup handler does not exit the process and thus does not
handle `SIGINT` properly.

## Expected Behavior
<!-- This is the behavior we should expect with the changes in this PR
-->

Nx processes handle SIGINT properly.

## Related Issue(s)
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merged. -->

Fixes #

(cherry picked from commit de8b189)

packages/nx/bin/nx.ts

@@ -21,6 +21,7 @@ import { performance } from 'perf_hooks';
 import { setupWorkspaceContext } from '../src/utils/workspace-context';
 import { daemonClient } from '../src/daemon/client/client';
 import { removeDbConnections } from '../src/utils/db-connection';
+import { signalToCode } from '../src/utils/exit-codes';
 
 function main() {
   if (
@@ -275,12 +276,26 @@ const getLatestVersionOfNx = ((fn: () => string) => {
   return () => cache || (cache = fn());
 })(_getLatestVersionOfNx);
 
-function nxCleanup() {
+function nxCleanup(signal?: NodeJS.Signals) {
   removeDbConnections();
+  if (signal) {
+    process.exit(signalToCode(signal));
+  } else {
+    process.exit();
+  }
 }
-process.on('exit', nxCleanup);
-process.on('SIGINT', nxCleanup);
-process.on('SIGTERM', nxCleanup);
-process.on('SIGHUP', nxCleanup);
+
+process.on('exit', () => {
+  nxCleanup();
+});
+process.on('SIGINT', () => {
+  nxCleanup('SIGINT');
+});
+process.on('SIGTERM', () => {
+  nxCleanup('SIGTERM');
+});
+process.on('SIGHUP', () => {
+  nxCleanup('SIGHUP');
+});
 
 main();