fix(emqx_stomp): fix hot-upgrade stopping listener failed

When the upgrade is executed, all envs of plugins are cleared,
which causes the listener of stomp to stop failing.

This is only a temporary modification to ensure that the upgrade
can be executed successfully.

following fixes: #6105

apps/emqx_stomp/src/emqx_stomp.appup.src

@@ -2,7 +2,8 @@
 {VSN,
   [{"4.3.1",[{load_module,emqx_stomp_connection,brutal_purge,soft_purge,[]}]},
    {"4.3.0",
-    [{restart_application,emqx_stomp}]},
+    [{restart_application,emqx_stomp},
+     {apply,{emqx_stomp,force_clear_after_app_stoped,[]}}]},
    {<<".*">>,[]}],
   [{"4.3.1",[{load_module,emqx_stomp_connection,brutal_purge,soft_purge,[]}]},
    {"4.3.0",

apps/emqx_stomp/src/emqx_stomp.erl

@@ -33,6 +33,8 @@
         , stop_listener/3
         ]).
 
+-export([force_clear_after_app_stoped/0]).
+
 -export([init/1]).
 
 -define(APP, ?MODULE).
@@ -52,6 +54,18 @@ start(_StartType, _StartArgs) ->
 stop(_State) ->
     stop_listeners().
 
+force_clear_after_app_stoped() ->
+    lists:foreach(fun({Name = {ProtoName, _}, _}) ->
+        case is_stomp_listener(ProtoName) of
+            true -> esockd:close(Name);
+            _ -> ok
+        end
+    end, esockd:listeners()).
+
+is_stomp_listener('stomp:tcp') -> true;
+is_stomp_listener('stomp:ssl') -> true;
+is_stomp_listener(_) -> false.
+
 %%--------------------------------------------------------------------
 %% Supervisor callbacks
 %%--------------------------------------------------------------------