Added same fix for both dnf and pacman

Author: GabrielDuf

src/UniGetUI.PackageEngine.Managers.Dnf/Helpers/DnfPkgDetailsHelper.cs

@@ -27,6 +27,8 @@ protected override void GetDetails_UnSafe(IPackageDetails details)
             },
         };
 
+        p.StartInfo.EnvironmentVariables["LANG"] = "C";
+        p.StartInfo.EnvironmentVariables["LC_ALL"] = "C";
         IProcessTaskLogger logger = Manager.TaskLogger.CreateNew(
             LoggableTaskType.LoadPackageDetails, p);
         p.Start();

src/UniGetUI.PackageEngine.Managers.Pacman/Helpers/PacmanPkgDetailsHelper.cs

@@ -27,6 +27,8 @@ protected override void GetDetails_UnSafe(IPackageDetails details)
             },
         };
 
+        p.StartInfo.EnvironmentVariables["LANG"] = "C";
+        p.StartInfo.EnvironmentVariables["LC_ALL"] = "C";
         IProcessTaskLogger logger = Manager.TaskLogger.CreateNew(
             LoggableTaskType.LoadPackageDetails, p);
         p.Start();