HTTPRoute upstream timeouts not honoured when BackendTrafficPolicy resource is Created.

[nebed]

Description:

when backendRequest timeout is set in HTTPRoute, and there is a BackendTrafficPolicy assigned to that route. the backendRequest timeout is not honoured.

Repro steps: create HTTPRoute resource with timeouts, create BackendTrafficPolicy Implementing ratelimit for that route.

Environment: gateway version - v1.1.2

Logs: Route with ratelimit and timeouts set

    pathMatch:
      distinct: false
      name: ""
      prefix: /api/resell    
    traffic:
      rateLimit:
        global:
          rules:
          - headerMatches:
            - distinct: true
              name: x-claim-name
            limit:
              requests: 2
              unit: Minute

Route with no rate limit

    pathMatch:
      distinct: false
      name: ""
      prefix: /
    traffic:
      timeout:
        http:
          requestTimeout: 15m0s

[nebed]

duplicate of https://github.com/envoyproxy/gateway/issues/4426