In TC-ICDM-3.4 make sure that a new session will be used after DUT re…

…boots (#35092)

* after DUT reboots make sure that a new session will be used
fixes #34985

* updated comment to reflect closing the session than expiring it

* re-establish session only when not in CI

src/python_testing/TC_ICDM_3_4.py

@@ -32,7 +32,8 @@
 import time
 
 import chip.clusters as Clusters
-from matter_testing_support import MatterBaseTest, TestStep, async_test_body, default_matter_test_main
+from matter_testing_support import (MatterBaseTest, MatterStackState, MatterTestConfig, TestStep, async_test_body,
+                                    default_matter_test_main)
 from mobly import asserts
 
 logger = logging.getLogger(__name__)
@@ -110,6 +111,16 @@ async def test_TC_ICDM_3_4(self):
             time.sleep(wait_time_reboot)
 
         self.step(3)
+        if not is_ci:
+            # since device has rebooted, force establishing a new CASE session by closing it
+            self.config = MatterTestConfig()
+            self.stack = MatterStackState(self.config)
+            devCtrl = self.stack.certificate_authorities[0].adminList[0].NewController(
+                nodeId=self.config.controller_node_id,
+                paaTrustStorePath=str(self.config.paa_trust_store_path),
+                catTags=self.config.controller_cat_tags
+            )
+            devCtrl.CloseSession(self.dut_node_id)
         icdCounter2 = await self._read_icdm_attribute_expect_success(attribute=attributes.ICDCounter)
         asserts.assert_greater_equal(icdCounter2, icdCounter1,
                                      "ICDCounter have reboot is not greater or equal to the ICDCounter read before the reboot.")