Fixed an issue where env variables didn't refresh when launching terminal (#6663)

Author: gave92

Files.Launcher/MessageHandlers/ApplicationLaunchHandler.cs

@@ -1,6 +1,7 @@
 using Files.Common;
 using Newtonsoft.Json;
 using System;
+using System.Collections;
 using System.Collections.Generic;
 using System.ComponentModel;
 using System.Diagnostics;
@@ -100,6 +101,14 @@ private async void HandleApplicationLaunch(string application, Dictionary<string
                 else
                 {
                     process.StartInfo.Arguments = arguments;
+                    // Refresh env variables for the child process
+                    foreach (DictionaryEntry ent in Environment.GetEnvironmentVariables(EnvironmentVariableTarget.Machine))
+                        process.StartInfo.EnvironmentVariables[(string)ent.Key] = (string)ent.Value;
+                    foreach (DictionaryEntry ent in Environment.GetEnvironmentVariables(EnvironmentVariableTarget.User))
+                        process.StartInfo.EnvironmentVariables[(string)ent.Key] = (string)ent.Value;
+                    process.StartInfo.EnvironmentVariables["PATH"] = string.Join(";", 
+                        Environment.GetEnvironmentVariable("PATH", EnvironmentVariableTarget.Machine),
+                        Environment.GetEnvironmentVariable("PATH", EnvironmentVariableTarget.User));
                 }
                 process.StartInfo.WorkingDirectory = workingDirectory;
                 process.Start();