API(program_guard) error message enhancement (#23452)

* API(program_guard) error message enhancement test=develop

* fix Cycle import test=develop

* polish code according comment test=develop

python/paddle/fluid/framework.py

@@ -4987,12 +4987,12 @@ def program_guard(main_program, startup_program=None):
              data = fluid.data(name='image', shape=[None, 784, 784], dtype='float32')
     
     """
-    if not isinstance(main_program, Program):
-        raise TypeError("main_program should be Program")
+    from .data_feeder import check_type
+    check_type(main_program, 'main_program', Program, 'fluid.program_guard')
     main_program = switch_main_program(main_program)
     if startup_program is not None:
-        if not isinstance(startup_program, Program):
-            raise TypeError("startup_program should be Program")
+        check_type(startup_program, 'startup_program', Program,
+                   'fluid.program_guard')
         startup_program = switch_startup_program(startup_program)
     yield
     switch_main_program(main_program)