[lldb] Skip part of TestDataFormatterAdv (llvm#72233)

libstdc++ data formatter simply forwards to the `const char *` formatter
-- which means it suffers from the same problem/bug as that one.

lldb/test/API/functionalities/data-formatter/data-formatter-advanced/TestDataFormatterAdv.py

@@ -6,6 +6,7 @@
 import lldb
 from lldbsuite.test.lldbtest import *
 import lldbsuite.test.lldbutil as lldbutil
+import re
 
 
 class AdvDataFormatterTestCase(TestBase):
@@ -298,7 +299,11 @@ def cleanup():
         self.runCmd("settings set target.max-string-summary-length 5")
         some_string = self.frame().FindVariable("some_string")
         some_string_summary = some_string.GetSummary()
-        self.assertEqual(some_string_summary, '"01234"...')
+        if (re.match(r"^std::__\w+::", some_string.GetTypeName())):
+          self.assertEqual(some_string_summary, '"01234"...')
+        else:
+          #libstdc++ string formatter suffers from the same problem as some_cstring below
+          pass
 
         some_carr = self.frame().FindVariable("some_carr")
         some_carr_summary = some_carr.GetSummary()