Merge pull request #3856 from overleaf/em-git-folder

Helpful error when trying to merge .git folder with Github

GitOrigin-RevId: 15e976b738e91d89a6dfe64833620b75070ff998

services/web/locales/en.json

@@ -1332,6 +1332,7 @@
   "continue_github_merge": "I have manually merged. Continue",
   "export_project_to_github": "Export Project to GitHub",
   "github_validation_check": "Please check that the repository name is valid, and that you have permission to create the repository.",
+  "github_git_folder_error": "This project contains a .git folder at the top level, indicating that it is already a git repository. The Overleaf Github sync service cannot sync git histories. Please remove the .git folder and try again.",
   "repository_name": "Repository Name",
   "optional": "Optional",
   "github_public_description": "Anyone can see this repository. You choose who can commit.",