[3.3] Fix triple rest http GET failed

[oxsean]

What is the purpose of the change

HTTP/1 upgrade caused GET request to failed
Case:
https://github.com/apache/dubbo-samples/blob/master/2-advanced/dubbo-samples-triple-rest/dubbo-samples-triple-rest-springmvc/src/test/java/org/apache/dubbo/rest/demo/test/ConsumerIT.java#L47

curl.exe -v --http2 http://127.0.0.1:50052/demo/hello?name=world

Expect 'Hello world' but respone empty body.

Root cause

HttpServerUpgradeHandler.java#L377 already support write response, HttpServerAfterUpgradeHandler duplicate writes cause incorrect GET results.

Brief changelog

Remove unnecessary HttpServerAfterUpgradeHandler

[sonarcloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
No data about Coverage
No data about Duplication

See analysis details on SonarCloud

[walklown]

I think you are right. I seem to be confused by another bug. Anyway 'HttpServerAfterUpgradeHandler' can be removed now, I will keep an eye on it.