[test] XFAIL TestFoundationDisassembly

rdar://problem/54977700

(cherry picked from commit ac78dd8)

Author: JDevlieghere

lldb/test/API/lang/objc/foundation/TestFoundationDisassembly.py

@@ -17,6 +17,7 @@ class FoundationDisassembleTestCase(TestBase):
     NO_DEBUG_INFO_TESTCASE = True
 
     @skipIfAsan
+    @expectedFailureDarwin('rdar://problem/54977700')
     def test_foundation_disasm(self):
         """Do 'disassemble -n func' on each and every 'Code' symbol entry from the Foundation.framework."""
         self.build()