Update PdoTrait.php

core/lib/Drupal/Core/Database/Statement/PdoTrait.php

@@ -108,10 +108,10 @@ protected function clientExecute(?array $arguments = [], array $options = []): b
    * @param int|null $cursorOffset
    *   Not implemented in all database drivers, don't use.
    *
-   * @return array<string|int|float|bool>|object|false
+   * @return array<string|int|float|bool>|object|string|int|float|bool
    *   A result, formatted according to $mode, or FALSE on failure.
    */
-  protected function clientFetch(?FetchAs $mode = NULL, ?int $cursorOrientation = NULL, ?int $cursorOffset = NULL) {
+  protected function clientFetch(?FetchAs $mode = NULL, ?int $cursorOrientation = NULL, ?int $cursorOffset = NULL): array|object|string|int|float|bool {
     return match(func_num_args()) {
       0 => $this->getClientStatement()->fetch(),
       1 => $this->getClientStatement()->fetch($this->fetchAsToPdo($mode)),