Add "revalidate" time to opcache scripts list

Closes GH-11816

Author: Mikhail Galanin

UPGRADING

@@ -108,6 +108,11 @@ PHP 8.3 UPGRADE NOTES
 - CLI
   . It is now possible to lint multiple files.
 
+- Opcache
+  . opcache_get_status()['scripts'][n]['revalidate'] now contains a Unix
+    timestamp of when the next revalidation of the scripts timestamp is due,
+    dictated by the opcache.revalidate_freq INI directive.
+
 - Posix
   . posix_getrlimit() now takes an optional $res parameter to allow fetching a
     single resource limit.

ext/opcache/zend_accelerator_module.c

@@ -616,6 +616,8 @@ static int accelerator_get_scripts(zval *return_value)
 			timerclear(&exec_time);
 			timerclear(&fetch_time);
 
+			add_assoc_long(&persistent_script_report, "revalidate", (zend_long)script->dynamic_members.revalidate);
+
 			zend_hash_update(Z_ARRVAL_P(return_value), cache_entry->key, &persistent_script_report);
 		}
 	}