Bug 1707954: Part 2 - Update Launcher Process with mscom::ProcessRuntime changes; r=Jamie

Given the changes in part 1, we must now use the `ProcessCategory` variant of
`ProcessRuntime`'s constructors.

Differential Revision: https://phabricator.services.mozilla.com/D113561

browser/app/winlauncher/LaunchUnelevated.cpp

@@ -128,7 +128,8 @@ namespace mozilla {
 LauncherVoidResult LaunchUnelevated(int aArgc, wchar_t* aArgv[]) {
   // We need COM to talk to Explorer. Using ProcessRuntime so that
   // process-global COM configuration is done correctly
-  mozilla::mscom::ProcessRuntime mscom(GeckoProcessType_Default);
+  mozilla::mscom::ProcessRuntime mscom(
+      mozilla::mscom::ProcessRuntime::ProcessCategory::Launcher);
   if (!mscom) {
     return LAUNCHER_ERROR_FROM_HRESULT(mscom.GetHResult());
   }