Quick successsion of "open script" commands opens several instances of external editor if it wasn't open before.

[bjornmp]

Godot version

4.0.stable.mono

System information

Windows 10, Vulkan

Issue description

When double clicking a .cs C# script file twice in the FileSystem view, or clicking the script icon twice in the Scene view, opens two instances of Visual Studio in case VS wasn't open before.

Steps to reproduce

• Have Visual Studio set as the external editor
• Close all Visual Studio instances
• Double clicking a script file twice in fast succession in the FileSystem view or clicking the script icon twice in fast succession in the Scene view,

The issue happens if the second "open script" command is issued before Visual Studio had time to open.

Minimal reproduction project

N/A