Fix editor host resize and dock splitter behavior

new_editor/app/Host/WindowMessageDispatcher.cpp

@@ -63,6 +63,13 @@ bool WindowMessageDispatcher::TryDispatch(
     };
 
     switch (message) {
+    case WM_GETMINMAXINFO:
+        if (application.IsBorderlessWindowEnabled() &&
+            application.HandleBorderlessWindowGetMinMaxInfo(lParam)) {
+            outResult = 0;
+            return true;
+        }
+        return false;
     case WM_NCCALCSIZE:
         if (application.IsBorderlessWindowEnabled()) {
             outResult = application.HandleBorderlessWindowNcCalcSize(wParam, lParam);
@@ -75,6 +82,12 @@ bool WindowMessageDispatcher::TryDispatch(
             return true;
         }
         return false;
+    case WM_SYSCOMMAND:
+        if (application.HandleBorderlessWindowSystemCommand(wParam)) {
+            outResult = 0;
+            return true;
+        }
+        return false;
     case WM_SETCURSOR:
         if (LOWORD(lParam) == HTCLIENT && application.ApplyCurrentCursor()) {
             outResult = TRUE;