When installing extension it looks for Godot executable in current project opened in VSCode instead of prompting you to enter the Godot executable location

### Godot version

4.7.2.stable

### VS Code version

1.116.0

### Godot Tools VS Code extension version

2.7.1

### System information

Windows 10

### Issue description

When I installed the extension through VSCode, an error message in the bottom right hand corner popped up saying that it couldn't find the Godot executable. It looked in current project/folder I happened to have open in VSCode, instead of prompting me to input a location for that executable.

Might be a feature request and not a bug. Re-categorize as needed.

### Steps to reproduce

1. Install the extension in VSCode through the extension marketplace naively, in a folder which doesn't contain a Godot executable.
2. Observe that in the bottom-right corner you will get an error notification/pop-up saying it couldn't find the Godot executable.

Reproduce the installation in VS Code with a folder that does not contain a Godot executable, then trace the extension's executable discovery and configuration flow. Done means the extension prompts for the Godot executable location instead of showing an error notification when no executable is found.

Written by the indexing model from the issue text.