FPM: Add "pcntl" when running another test depending on pcntl

sapi/fpm/tests/bug77023-pm-dynamic-blocking-sigquit.phpt

@@ -36,7 +36,7 @@ EOT;
 
 
 $tester = new FPM\Tester($cfg, $code);
-$tester->start();
+$tester->start(extensions: ['pcntl']);
 $tester->expectLogStartNotices();
 $tester->multiRequest(2);
 $tester->status([

sapi/fpm/tests/reload-uses-sigkill-as-last-measure.phpt

@@ -1,5 +1,5 @@
 --TEST--
-If SIGQUIT and SIGTERM during reloading fail, SIGKILL should be sent
+FPM: If SIGQUIT and SIGTERM during reloading fail, SIGKILL should be sent
 --EXTENSIONS--
 pcntl
 --SKIPIF--