feat(adminui): Test Connect button on every typed driver page

- AdminProbeService routes TestDriverConnect through
  IAdminOperationsClient with a 65s outer guard (actor side already
  clamps to [1,60]).
- Added generic AskAsync<T> to IAdminOperationsClient interface and
  AdminOperationsClient impl, delegating straight to the Akka proxy.
- DriverTestConnectButton renders the button + inline result chip,
  auto-clears after 30s, disables during in-flight.
- Wired into all 9 typed driver pages directly under the
  identity section. Sources timeout from the form's
  ProbeTimeoutSeconds; sources config JSON from the form's
  current Options (operator can test BEFORE saving).

src/Server/ZB.MOM.WW.OtOpcUa.AdminUI/Components/Pages/Clusters/Drivers/ModbusDriverPage.razor

@@ -3,6 +3,7 @@
 @rendermode RenderMode.InteractiveServer
 @using Microsoft.AspNetCore.Components.Forms
 @using Microsoft.EntityFrameworkCore
+@using ZB.MOM.WW.OtOpcUa.AdminUI.Clients
 @using ZB.MOM.WW.OtOpcUa.AdminUI.Components.Shared.Drivers
 @using ZB.MOM.WW.OtOpcUa.Configuration
 @using ZB.MOM.WW.OtOpcUa.Configuration.Entities
@@ -41,6 +42,12 @@ else
                 <DriverStatusPanel DriverInstanceId="@DriverInstanceId" Enabled="@_identityModel.Enabled" />
             }
 
+            <div class="mt-2 mb-3">
+                <DriverTestConnectButton DriverType="@DriverTypeKey"
+                                         GetConfigJson="@SerializeCurrentConfig"
+                                         TimeoutSeconds="@_form.AdminProbeTimeoutSeconds" />
+            </div>
+
             @* Transport *@
             <section class="panel rise mt-3" style="animation-delay:.06s">
                 <div class="panel-head">Transport</div>
@@ -415,6 +422,9 @@ else
         finally { _busy = false; }
     }
 
+    private string SerializeCurrentConfig()
+        => System.Text.Json.JsonSerializer.Serialize(_form.ToOptions(_tags), _jsonOpts);
+
     private static ModbusDriverOptions? TryDeserialize(string json)
     {
         try { return System.Text.Json.JsonSerializer.Deserialize<ModbusDriverOptions>(json, _jsonOpts); }