JIT: Fix named arguments handling

Fixes oss-fuzz #41486

Author: dstogov

ext/opcache/tests/jit/send_val_002.phpt

@@ -0,0 +1,23 @@
+--TEST--
+JIT SEND_VAL: 002 named arg 
+--INI--
+opcache.enable=1
+opcache.enable_cli=1
+opcache.file_update_protection=0
+opcache.jit_buffer_size=1M
+--FILE--
+<?php
+function o(){
+    var_dump(x:$x?1:0);
+}
+o();
+?>
+--EXPECTF--
+Warning: Undefined variable $x in %ssend_val_002.php on line 3
+
+Fatal error: Uncaught ArgumentCountError: var_dump() expects at least 1 argument, 0 given in %ssend_val_002.php:3
+Stack trace:
+#0 %ssend_val_002.php(3): var_dump(x: 0)
+#1 %ssend_val_002.php(5): o()
+#2 {main}
+  thrown in %ssend_val_002.php on line 3