Refactor repository selection logic in GithubPrivateRepository.php

app/Livewire/Project/New/GithubPrivateRepository.php

@@ -81,7 +81,7 @@ class GithubPrivateRepository extends Component
         }
         $this->repositories = $this->repositories->sortBy('name');
         if ($this->repositories->count() > 0) {
-            $this->selected_repository_id = data_get($this->repositories,'0.id');
+            $this->selected_repository_id = data_get($this->repositories->first(), 'id');
         }
         $this->current_step = 'repository';
     }