Offer a model in the security audit dialog when none is configured

app/MindWork AI Studio/Dialogs/AssistantPluginAuditDialog.razor

@@ -36,6 +36,18 @@
                     </MudText>
                 </MudPaper>
 
+                @if (this.NeedsProviderSelection && !this.securityState.IsEnterpriseApproved)
+                {
+                    <MudPaper Class="pa-3 border-dashed border rounded-lg">
+                        <MudText Typo="Typo.body2" Class="mb-3">
+                            @T("No model is set for security checks, neither for this agent nor for the app as a whole. Choose one here to check this plugin. Your choice applies to this check only; you can set a permanent one in the app settings.")
+                        </MudText>
+                        <CascadingValue Value="Components.AGENT_ASSISTANT_PLUGIN_AUDIT">
+                            <ProviderSelection @bind-ProviderSettings="@this.auditProviderSelection" ValidateProvider="@this.ValidatingProvider" Disabled="@this.isAuditing" />
+                        </CascadingValue>
+                    </MudPaper>
+                }
+
                 <MudExpansionPanels MultiExpansion="true">
                     <MudExpansionPanel Expanded="true">
                         <TitleContent>