Fix stream coordinator machine upgrade

Use V4 module to initialize state when version < 5.

Author: acogoluegnes

deps/rabbit/src/rabbit_stream_coordinator.erl

@@ -2296,8 +2296,10 @@ machine_version(1, 2, State = #?MODULE{streams = Streams0,
                    monitors = Monitors2,
                    listeners = undefined}, Effects};
 machine_version(2, 3, State) ->
-    rabbit_log:info("Stream coordinator machine version changes from 2 to 3, updating state."),
-    {State#?MODULE{single_active_consumer = rabbit_stream_sac_coordinator:init_state()},
+    rabbit_log:info("Stream coordinator machine version changes from 2 to 3, "
+                    "updating state."),
+    SacState = rabbit_stream_sac_coordinator_v4:init_state(),
+    {State#?MODULE{single_active_consumer = SacState},
      []};
 machine_version(3, 4, #?MODULE{streams = Streams0} = State) ->
     rabbit_log:info("Stream coordinator machine version changes from 3 to 4, updating state."),

deps/rabbit/test/rabbit_stream_coordinator_SUITE.erl

@@ -1363,7 +1363,7 @@ delete_replica_leader(_) ->
     ok.
 
 overview(_Config) ->
-    S0 = rabbit_stream_coordinator:init(undefined),
+    S0 = rabbit_stream_coordinator:init(#{machine_version => 5}),
     O0 = rabbit_stream_coordinator:overview(S0),
     ?assertMatch(#{num_monitors := 0,
                    num_streams := 0,

deps/rabbit/test/rabbit_stream_sac_coordinator_SUITE.erl

@@ -532,7 +532,8 @@ import_state_v4_empty_test(_) ->
     OldMod = rabbit_stream_sac_coordinator_v4,
     OldState = OldMod:init_state(),
     Export = OldMod:state_to_map(OldState),
-    ?assertEqual(#?STATE{groups = #{}, pids_groups = #{}},
+    ?assertEqual(#?STATE{groups = #{}, pids_groups = #{},
+                         conf = #{disconnected_timeout => 60_000}},
                  ?MOD:import_state(4, Export)),
     ok.