Debugger: Disable QStandardItemModel dumper test for LLDB

The dumper is far from portable, make the test pass for now.

Change-Id: I52cdd8e5c73d21d837772be83087dc065698db30
Reviewed-by: hjk <hjk121@nokiamail.com>

tests/auto/debugger/tst_dumpers.cpp

@@ -2634,6 +2634,7 @@ void tst_Dumpers::dumper_data()
                     "       << (new QStandardItem(\"aa\")));\n"
                     "unused(&i1, &i2, &i11, &m, &mi);\n")
 
+               + GdbEngine
                + GuiProfile()
 
                + Check("i1", "", "@QStandardItem")