Verify first-class callables work in annotations

See https://wiki.php.net/rfc/closures_in_const_expr#future_scope

Author: thekid

src/test/php/lang/ast/unittest/emit/AnnotationSupport.class.php

@@ -74,6 +74,12 @@ public function closure_value() {
     Assert::equals('test', $verify[0]('test'));
   }
 
+  #[Test]
+  public function first_class_callable_value() {
+    $verify= $this->annotations($this->declare('#[Verify(strtoupper(...))]'))['Verify'];
+    Assert::equals('TEST', $verify[0]('test'));
+  }
+
   #[Test]
   public function arrow_function_value() {
     $verify= $this->annotations($this->declare('#[Verify(fn($arg) => $arg)]'))['Verify'];