[lldb][test] TestTsanBasic.py: fix function name assertion

Since llvm#133079 we no longer stop
in the stanitizer library when hitting a sanitizer breakpoint. Adjust
the test accordingly.

(cherry picked from commit bdf645b)

Author: Michael137

lldb/test/API/functionalities/tsan/basic/TestTsanBasic.py

@@ -63,11 +63,11 @@ def tsan_tests(self):
             substrs=["1 match found"],
         )
 
-        # We should be stopped in __tsan_on_report
+        # We should not be stopped in the sanitizer library.
         process = self.dbg.GetSelectedTarget().process
         thread = process.GetSelectedThread()
         frame = thread.GetSelectedFrame()
-        self.assertIn("__tsan_on_report", frame.GetFunctionName())
+        self.assertIn("f2", frame.GetFunctionName())
 
         # The stopped thread backtrace should contain either line1 or line2
         # from main.c.