Fix Db2 and non-ODBC transports with PHP 8.4

The fix for ODBC regressed Db2 support with an overzealous check
at the generic Toolkit level.

Author: NattyNarwhal

ToolkitApi/Toolkit.php

@@ -285,8 +285,10 @@ public function __construct($databaseNameOrResource, $userOrI5NamingFlag = '0',
                 $this->debugLog("Created a new db connection in $durationCreate seconds.");
             }
 
-            if ((version_compare(PHP_VERSION, '8.4.0', '<') && !is_resource($conn)) ||
-                (version_compare(PHP_VERSION, '8.4.0', '>=') && !($conn instanceof \Odbc\Connection))) {
+            // Just check if the transport connection isn't false/null.
+            // Stricter checks for resource vs. object should be done at
+            // transport level due to version variance.
+            if (!$conn) {
                 // Note: SQLState 08001 (with or without SQLCODE=-30082) usually means invalid user or password. This is true for DB2 and ODBC.
                 $sqlState = $transport->getErrorCode();
                 $this->error = $transport->getErrorMsg();