fix(resources/client): ignore GET_CONVAR gets for update channel

People tend to use the update channel as a marker for some other (less
related) state, usually with counterproductive effects.

Requested in https://forum.cfx.re/t/5025093.

code/components/citizen-resources-client/src/ConsoleScriptFunctions.cpp

@@ -12,7 +12,8 @@ static InitFunction initFunction([]()
 
 		// this should not be exposed to script
 		// #TODO: 'not exposed to script' convar flags
-		if (HashString(varName.c_str()) == HashString("cl_ownershipTicket"))
+		if (HashString(varName.c_str()) == HashString("cl_ownershipTicket") || // ownership ticket is *very* bad to expose as users can pretend to be other users using this
+			HashString(varName.c_str()) == HashString("ui_updateChannel"))     // update channel is often misused as a marker for other things
 		{
 			context.SetResult(context.CheckArgument<const char*>(1));
 			return;