[zigbee] Allow to combine and merge endpoints on esp32 (#17402)

tests/components/zigbee/common_esp32.yaml

@@ -8,10 +8,20 @@ binary_sensor:
   - platform: template
     name: "Garage Door Open 12"
     report: "force"
+    endpoint: 1
+
+sensor:
+  - platform: template
+    name: "Temperature Sensor"
+    lambda: return 10.0;
+    device_class: temperature
+    unit_of_measurement: "°C"
+    endpoint: 1
+    use_device_type: true
 
 zigbee:
   model: zigbee_test
-  router: true
+  router: false
   power_source: MAINS_SINGLE_PHASE
   on_join:
     then:

tests/components/zigbee/test-router.esp32-c6-idf.yaml

@@ -0,0 +1,7 @@
+zigbee:
+  model: zigbee_test
+  router: true
+  power_source: MAINS_SINGLE_PHASE
+  on_join:
+    then:
+      - logger.log: "Joined network"