Refactor GitHub authentication flow and update PersonPlatformIntegration lookup

Author: rsmithlal

app/controllers/better_together/omniauth_callbacks_controller.rb

@@ -20,8 +20,7 @@ def github
   def handle_auth(kind)
     if user.present?
       flash[:success] = t 'devise_omniauth_callbacks.success', kind: kind if is_navigational_format?
-      sign_in_and_redirect user, event: :authentication
-      redirect_to edit_user_registration_path
+      sign_in_and_redirect user, event: :authentication # This handles the redirect
     else
       flash[:alert] =
         t 'devise_omniauth_callbacks.failure', kind:, reason: "#{auth.info.email} is not authorized"
@@ -34,7 +33,8 @@ def auth
   end
 
   def set_person_platform_integration
-    @person_platform_integration = PersonPlatformIntegration.find_by(provider: auth.provider, uid: auth.uid)
+    @person_platform_integration = BetterTogether::PersonPlatformIntegration.find_by(provider: auth.provider,
+                                                                                     uid: auth.uid)
   end
 
   def set_user

spec/controllers/better_together/omniauth_callbacks_controller_spec.rb

@@ -10,6 +10,7 @@
 
   let(:platform) { configure_host_platform }
   let(:community) { platform.community }
+  let!(:github_platform) { create(:better_together_platform, :oauth_provider, identifier: 'github', name: 'GitHub') }
 
   before do
     # Set up test platform for host application