Panel: unticking 'web panel enabled' + restart panel really turns it off (2.9.5)

The restart used to refuse when the panel was disabled, so it stayed
reachable. Now it stops the panel (also the relay on the game port);
'panel on|off' in the console turns it on/off and saves server.json.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

MSCO.Server.csproj

@@ -7,7 +7,7 @@
     <ImplicitUsings>enable</ImplicitUsings>
     <RootNamespace>MSCO.Server</RootNamespace>
     <AssemblyName>MSCO.Server</AssemblyName>
-    <Version>2.9.4</Version>
+    <Version>2.9.5</Version>
     <Company>MBM</Company>
     <Product>MSCO Dedicated Server</Product>
     <InvariantGlobalization>true</InvariantGlobalization>