test: avoid left behind child processes

Extend the Linux logic to all POSIX platforms in
test-child-process-exec-abortcontroller-promisified.

PR-URL: nodejs#46276
Fixes: nodejs/build#3154
Refs: nodejs#37518
Reviewed-By: Moshe Atlow <[email protected]>
Reviewed-By: Beth Griggs <[email protected]>
Reviewed-By: Ruy Adorno <[email protected]>
Reviewed-By: Colin Ihrig <[email protected]>
Reviewed-By: Luigi Pinca <[email protected]>
Reviewed-By: Michaël Zasso <[email protected]>
Reviewed-By: Michael Dawson <[email protected]>
Reviewed-By: Rafael Gonzaga <[email protected]>
Reviewed-By: James M Snell <[email protected]>

Author: richardlau

test/parallel/test-child-process-exec-abortcontroller-promisified.js

@@ -11,9 +11,9 @@ const invalidArgTypeError = {
   name: 'TypeError'
 };
 
-const waitCommand = common.isLinux ?
-  'sleep 2m' :
-  `${process.execPath} -e "setInterval(()=>{}, 99)"`;
+const waitCommand = common.isWindows ?
+  `${process.execPath} -e "setInterval(()=>{}, 99)"` :
+  'sleep 2m';
 
 {
   const ac = new AbortController();