Merge pull request #1607 from WordPress/fix/deprecated-notice

Add ReturnTypeWillChange attribute for offsetGet to suppress notice

plugins/optimization-detective/class-od-element.php

@@ -186,6 +186,7 @@ public function offsetExists( $offset ): bool {
 	 * @param mixed $offset Key.
 	 * @return mixed May return any value from ElementData including possible extensions.
 	 */
+	#[ReturnTypeWillChange]
 	public function offsetGet( $offset ) {
 		return $this->data[ $offset ] ?? null;
 	}