[lldb] Disable TestStackFromStdModule.py

TestStackFromStdModule.py started failing due to f4fb72e6d4
(https://reviews.llvm.org/D128146), with a clang assertion failure:
assert(isa<InjectedClassNameType>(Decl->TypeForDecl))

lldb/test/API/commands/expression/import-std-module/stack/TestStackFromStdModule.py

@@ -11,6 +11,7 @@ class TestStack(TestBase):
     @add_test_categories(["libc++"])
     @skipIf(compiler=no_match("clang"))
     @skipIfLinux # Declaration in some Linux headers causes LLDB to crash.
+    @skipIf(bugnumber="rdar://97622854")
     def test(self):
         self.build()