test: extend debugger startup timeout on macOS

Debugger tests spawn a debugger client and target process, then wait for
asynchronous CLI output through a shared test helper.Under high parallel
load on macOS, process scheduling and inspector communication can delay
progress beyond the existing 15-second timeout, causing intermittent
failures across multiple debugger tests.

Signed-off-by: Archkon <180910180+Archkon@users.noreply.github.com>

Author: Archkon

test/common/debugger.js

@@ -10,7 +10,9 @@ const BREAK_MESSAGE = new RegExp('(?:' + [
 let TIMEOUT = common.platformTimeout(10000);
 // Some macOS and Windows machines require more time to receive the outputs from the client.
 // https://github.com/nodejs/build/issues/3014
-if (common.isWindows || common.isMacOS) {
+if (common.isMacOS) {
+  TIMEOUT = common.platformTimeout(30000);
+} else if (common.isWindows) {
   TIMEOUT = common.platformTimeout(15000);
 }