Fix order()->first() bug

lib/Relation.php

@@ -816,10 +816,10 @@ private function firstOrLast(int $limit = null, bool $isAscending): array
         $pk = $this->table()->pk;
         if (!empty($pk)) {
             if (array_key_exists('order', $options)) {
-                $reverseCommand = $isAscending ? 'DESC' : 'ASC';
-
-                if (str_contains($options['order'], implode(" {$reverseCommand}, ", $this->table()->pk) . " {$reverseCommand}")) {
-                    $options['order'] = SQLBuilder::reverse_order((string) $options['order']);
+                if (!$isAscending) {
+                    if (str_contains($options['order'], implode(' DESC, ', $this->table()->pk) . ' DESC')) {
+                        $options['order'] = SQLBuilder::reverse_order((string) $options['order']);
+                    }
                 }
             } elseif (!array_key_exists('having', $options)) {
                 $command = $isAscending ? 'ASC' : 'DESC';

test/ActiveRecordFirstLastTest.php

@@ -108,7 +108,8 @@ public function testLastWithCountOverridesLimit()
     public function testDoesNotClobberOrderOrLimit()
     {
         $rel = Author::limit(2)->order('author_id DESC');
-        $this->assertEquals(1, $rel->first()->author_id);
+        $this->assertEquals(Author::last(), $rel->first());
+        $this->assertEquals(Author::first(), $rel->last());
 
         $authors = $rel->to_a();
         $this->assertEquals(2, count($authors));