[202405] Fix Backtrace in route-check during config reload/minigraph.

[abdosi]

What I did:

Fix below BT:

Program 'routeCheck'
  status                       Status ok
  monitoring status            Monitored
  monitoring mode              active
  on reboot                    start
  last exit value              1
  last output                  Exiting: failed to connect to any daemons.
                               Traceback (most recent call last):
                                 File "/usr/local/bin/route_check.py", line 878, in <module>
                                   sys.exit(main()[0])
                                            ^^^^^^
                                 File "/usr/local/bin/route_check.py", line 864, in main
                                   ret, res= check_routes(namespace)
                                             ^^^^^^^^^^^^^^^^^^^^^^^
                                 File "/usr/local/bin/route_check.py", line 794, in check_routes
                                   if is_bgp_suppress_fib_pending_enabled(namespace):
                                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
                                 File "/usr/local/bin/route_check.py", line 337, in is_bgp_suppress_fib_pending_enabled
                                   output = subprocess.check_output(show_run_cmd, text=True)
                                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
                                 File "/usr/lib/python3.11/subprocess.py", line 466, in ch
  data collected               Mon, 16 Dec 2024 02:26:37

How I did:
Make API is_bgp_suppress_fib_pending_enabled always return False as on 202405 image this feature is not supported.

[mssonicbld]

/azp run

[azure-pipelines]

Azure Pipelines successfully started running 1 pipeline(s).

[abdosi]

@xumia @liushilongbuaa : can you check this build error ?

[abdosi]

@liushilongbuaa : is the build error of not able to download swss-common package is expected ?

[abdosi]

@bingwang-ms @StormLiangMS : please help signoff this for 202405.

[bingwang-ms]

@abdosi PR checker is failing. I just retriggered it.