Unnecessary "Couldn't connect to GDScript language server" when in non-Godot workspace

### Godot version

4.2.2 stable

### VS Code version

1.89.1

### Godot Tools VS Code extension version

2.1.0

### System information

Ubuntu 24.04

### Issue description

When opening a non-Godot workspace in VSCode, the Godot extension still generates a notification that "the GDScript language server isn't available", even though it isn't necessary.

The notification should still pop up if it's detected that this workspace is a Godot project.

### Steps to reproduce

- Don't have Godot opened
- Open a random, not-Godot workspace
- Wait about a minute
- Note the warning notification in the bottom-right, "Couldn't connect to the GDScript language server at 127.0.0.1:6008. Is the Godot editor or language server running?"