fix: signal trait (#9846)

Author: michalsn

system/CLI/SignalTrait.php

@@ -95,13 +95,17 @@ protected function isPosixAvailable(): bool
      * @param array<int, string> $methodMap Optional signal-to-method mapping
      */
     protected function registerSignals(
-        array $signals = [SIGTERM, SIGINT, SIGHUP, SIGQUIT],
+        array $signals = [],
         array $methodMap = [],
     ): void {
         if (! $this->isPcntlAvailable()) {
             return;
         }
 
+        if ($signals === []) {
+            $signals = [SIGTERM, SIGINT, SIGHUP, SIGQUIT];
+        }
+
         if (! $this->isPosixAvailable() && (in_array(SIGTSTP, $signals, true) || in_array(SIGCONT, $signals, true))) {
             CLI::write(lang('CLI.signals.noPosixExtension'), 'yellow');
             $signals = array_diff($signals, [SIGTSTP, SIGCONT]);