fix(tracefunnel): require view access on trace funnel analytics endpoints (#12817)

#### Description

- The twelve `/api/v1/trace-funnels/analytics/*` route registrations
were missing an authorization wrapper. The six payload routes
(`/analytics/*`) were reachable without authentication; the six
`/{funnel_id}/analytics/*` routes ran without the role check the
middleware applies.
- Wrap all twelve in `am.ViewAccess`, matching the sibling trace-funnel
CRUD routes, so they require an authenticated viewer.

#### Additional Information

- Applies to both community and enterprise editions
(`RegisterTraceFunnelsRoutes` is shared by both servers).
- No change for authenticated viewers; anonymous and role-less callers
now get 401/403.
- Security advisory:
https://github.com/SigNoz/signoz/security/advisories/GHSA-v549-7j2x-qjm5.

pkg/query-service/app/http_handler.go

@@ -4070,20 +4070,20 @@ func (aH *APIHandler) RegisterTraceFunnelsRoutes(router *mux.Router, am *middlew
 		Methods(http.MethodPut)
 
 	// Analytics endpoints
-	traceFunnelsRouter.HandleFunc("/{funnel_id}/analytics/validate", aH.handleValidateTraces).Methods("POST")
-	traceFunnelsRouter.HandleFunc("/{funnel_id}/analytics/overview", aH.handleFunnelAnalytics).Methods("POST")
-	traceFunnelsRouter.HandleFunc("/{funnel_id}/analytics/steps", aH.handleStepAnalytics).Methods("POST")
-	traceFunnelsRouter.HandleFunc("/{funnel_id}/analytics/steps/overview", aH.handleFunnelStepAnalytics).Methods("POST")
-	traceFunnelsRouter.HandleFunc("/{funnel_id}/analytics/slow-traces", aH.handleFunnelSlowTraces).Methods("POST")
-	traceFunnelsRouter.HandleFunc("/{funnel_id}/analytics/error-traces", aH.handleFunnelErrorTraces).Methods("POST")
+	traceFunnelsRouter.HandleFunc("/{funnel_id}/analytics/validate", am.ViewAccess(aH.handleValidateTraces)).Methods("POST")
+	traceFunnelsRouter.HandleFunc("/{funnel_id}/analytics/overview", am.ViewAccess(aH.handleFunnelAnalytics)).Methods("POST")
+	traceFunnelsRouter.HandleFunc("/{funnel_id}/analytics/steps", am.ViewAccess(aH.handleStepAnalytics)).Methods("POST")
+	traceFunnelsRouter.HandleFunc("/{funnel_id}/analytics/steps/overview", am.ViewAccess(aH.handleFunnelStepAnalytics)).Methods("POST")
+	traceFunnelsRouter.HandleFunc("/{funnel_id}/analytics/slow-traces", am.ViewAccess(aH.handleFunnelSlowTraces)).Methods("POST")
+	traceFunnelsRouter.HandleFunc("/{funnel_id}/analytics/error-traces", am.ViewAccess(aH.handleFunnelErrorTraces)).Methods("POST")
 
 	// Analytics endpoints
-	traceFunnelsRouter.HandleFunc("/analytics/validate", aH.handleValidateTracesWithPayload).Methods("POST")
-	traceFunnelsRouter.HandleFunc("/analytics/overview", aH.handleFunnelAnalyticsWithPayload).Methods("POST")
-	traceFunnelsRouter.HandleFunc("/analytics/steps", aH.handleStepAnalyticsWithPayload).Methods("POST")
-	traceFunnelsRouter.HandleFunc("/analytics/steps/overview", aH.handleFunnelStepAnalyticsWithPayload).Methods("POST")
-	traceFunnelsRouter.HandleFunc("/analytics/slow-traces", aH.handleFunnelSlowTracesWithPayload).Methods("POST")
-	traceFunnelsRouter.HandleFunc("/analytics/error-traces", aH.handleFunnelErrorTracesWithPayload).Methods("POST")
+	traceFunnelsRouter.HandleFunc("/analytics/validate", am.ViewAccess(aH.handleValidateTracesWithPayload)).Methods("POST")
+	traceFunnelsRouter.HandleFunc("/analytics/overview", am.ViewAccess(aH.handleFunnelAnalyticsWithPayload)).Methods("POST")
+	traceFunnelsRouter.HandleFunc("/analytics/steps", am.ViewAccess(aH.handleStepAnalyticsWithPayload)).Methods("POST")
+	traceFunnelsRouter.HandleFunc("/analytics/steps/overview", am.ViewAccess(aH.handleFunnelStepAnalyticsWithPayload)).Methods("POST")
+	traceFunnelsRouter.HandleFunc("/analytics/slow-traces", am.ViewAccess(aH.handleFunnelSlowTracesWithPayload)).Methods("POST")
+	traceFunnelsRouter.HandleFunc("/analytics/error-traces", am.ViewAccess(aH.handleFunnelErrorTracesWithPayload)).Methods("POST")
 }
 
 func (aH *APIHandler) handleValidateTraces(w http.ResponseWriter, r *http.Request) {