Fix GH-22218: SoapServer::handle() crash on non-array $_SERVER.

add reproducer.

Fix #22218

Author: devnexen

ext/soap/tests/gh22218.phpt

@@ -0,0 +1,27 @@
+--TEST--
+GH-22218 (SoapServer::handle() segfault on non-array/unset $_SERVER)
+--EXTENSIONS--
+soap
+--CREDITS--
+Rex-Reynolds
+--SKIPIF--
+<?php
+if (php_sapi_name() == 'cli') echo 'skip needs request body (POST)';
+?>
+--POST--
+<SOAP-ENV:Envelope
+    xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/">
+    <SOAP-ENV:Body>
+        <test/>
+    </SOAP-ENV:Body>
+</SOAP-ENV:Envelope>
+--FILE--
+<?php
+$_SERVER = 79;
+$server = new SoapServer(null, ['uri' => 'http://test-uri']);
+$server->handle();
+echo "ALIVE\n";
+?>
+--EXPECTF--
+%A
+ALIVE