Remove Shelly RSSI sensor if Wi-FI is not configured (#108390)

* Remove Shelly RSSI sensor if Wi-FI is not configured

* fix tests

homeassistant/components/shelly/sensor.py

@@ -907,6 +907,9 @@ RPC_SENSORS: Final = {
         device_class=SensorDeviceClass.SIGNAL_STRENGTH,
         state_class=SensorStateClass.MEASUREMENT,
         entity_registry_enabled_default=False,
+        removal_condition=lambda config, _status, key: (
+            config[key]["sta"]["enable"] is False
+        ),
         entity_category=EntityCategory.DIAGNOSTIC,
         use_polling_coordinator=True,
     ),

tests/components/shelly/conftest.py

@@ -159,6 +159,7 @@ MOCK_CONFIG = {
         "ui_data": {},
         "device": {"name": "Test name"},
     },
+    "wifi": {"sta": {"enable": True}},
 }
 
 MOCK_SHELLY_COAP = {