Flaky: TestE2E/GRPCExtAuth/http_route_with_ext_auth_authentication

[zirain]

https://github.com/envoyproxy/gateway/actions/runs/14932718281/job/41953640003

=== RUN TestE2E/GRPCExtAuth/http_route_with_ext_auth_authentication
ext_auth_grpc_service.go:66: 2025-05-09T16:25:49.449139239Z: Making GET request to http://172.18.0.203/myapp
roundtripper.go:219: 2025-05-09T16:25:49.449590832Z: Sending Request:
< GET /myapp HTTP/1.1
< Host: www.example.com
< User-Agent: Go-http-client/1.1
< Authorization: ***
< X-Echo-Set-Header:
< Accept-Encoding: gzip
<
<

roundtripper.go:235: 2025-05-09T16:25:49.456775378Z: Received Response:
    < HTTP/1.1 403 Forbidden
    < Connection: close
    < Date: Fri, 09 May 2025 16:25:49 GMT
    < Content-Length: 0
    < 
    < 
    
    
ext_auth_grpc_service.go:73: failed to compare request and response: expected status code to be 200, got 403

[zirain]

still there: https://github.com/envoyproxy/gateway/actions/runs/14962233642/job/42026355201