Don't set full screen to quake window (#13473)

If launch mode is set to full screen quake window is opened in full
screen.

## Validation Steps Performed
- Set startup > launch mode > full screen
- Launch quake window
- Quake window shouldn't be opened in full screen

Closes #12894

(cherry picked from commit 589286a)
Service-Card-Id: 84116410
Service-Version: 1.15

src/cascadia/TerminalApp/AppLogic.cpp

@@ -292,7 +292,7 @@ namespace winrt::TerminalApp::implementation
                 _root->Maximized(true);
             }
 
-            if (WI_IsFlagSet(launchMode, LaunchMode::FullscreenMode))
+            if (WI_IsFlagSet(launchMode, LaunchMode::FullscreenMode) && !IsQuakeWindow())
             {
                 _root->SetFullscreen(true);
             }