telephony: deploy ARI abort-fix image v20260614-arifix; drop 3600s band-aids

Image -> v20260614-arifix (Telephony 86ff0d0: ReceiveAsync no longer cancelled).
Remove the WebSocketKeepAliveTimeoutSeconds/WebSocketReceiveTimeoutSeconds=3600
band-aids; the code now disables the pong deadline by default and ignores the
receive timeout (liveness = keepalive ping + WebSocketException/Close).

apps/telephony/telephony.yaml

@@ -64,9 +64,7 @@ data:
         "Application": "flowercore-pbx",
         "ReconnectDelaySeconds": 5,
         "MaxReconnectDelaySeconds": 60,
-        "WebSocketKeepAliveIntervalSeconds": 30,
-        "WebSocketKeepAliveTimeoutSeconds": 3600,
-        "WebSocketReceiveTimeoutSeconds": 3600
+        "WebSocketKeepAliveIntervalSeconds": 30
       },
       "Sip": {
         "Domain": "10.0.56.207",
@@ -158,7 +156,7 @@ spec:
               topologyKey: kubernetes.io/hostname
       containers:
         - name: telephony-web
-          image: localhost/fc-telephony-web:v202604252156
+          image: localhost/fc-telephony-web:v20260614-arifix
           imagePullPolicy: Never
           securityContext:
             readOnlyRootFilesystem: true