fix: skip Oryx build for static site

Azure SWA Oryx detected package.json and tried npm build.
Added skip_app_build: true since this is a plain static site.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Author: Manaiakalani

.github/workflows/azure-static-web-apps-gray-smoke-07ceed71e.yml

@@ -32,6 +32,7 @@ jobs:
           app_location: "/" # App source code path
           api_location: "" # Api source code path - optional
           output_location: "/" # Built app content directory - optional
+          skip_app_build: true
           ###### End of Repository/Build Configurations ######
 
   close_pull_request_job: