Open An Org button presented when no Salesforce Project is open

**Describe the bug**
If I close a project in Code Builder, I am presented with a "Let's Get You Started" screen which has the option to Connect a Salesforce Org. But this will not work because the Salesforce tools don't open up unless I have a Salesforce project open, so this option should not actually be presented.

**To Reproduce**
Steps to reproduce the behavior:
1. Create a new Code Builder environment
2. Click "Hamburger" -> File -> Close Folder
3. "Let's Get You Started" screen appears with blue button to open a Salesforce Org

**Expected behavior**
No "Connect an Org" button should appear, it's not relevant in this context

**Screenshots**

**Desktop (please complete the following information):**
- OS: any
- Browser: any

**Smartphone or other device (please complete the following information):**
N/A

**Additional context**
Actually, it would be nice for this screen to not show up at all in this context, because, since the mechanism to hide this screen is via the `.vscode/settings.json` file in a Salesforce project, and this isn't a Salesforce project, it means this screen shows up every single time you close a project directory. They may not be what a user wants after they've used a Code Builder environment for a while.

Tái hiện sự cố bằng cách tạo một môi trường Code Builder, đóng thư mục qua File > Close Folder và quan sát màn hình “Let's Get You Started”. Kiểm tra cách cơ chế .vscode/settings.json ẩn màn hình này trong các dự án Salesforce; được xem là hoàn tất khi màn hình không liên quan và nút “Connect an Org” không còn xuất hiện trong ngữ cảnh này.

Do mô hình lập chỉ mục viết ra từ nội dung của issue.