fix: grpc-web trailers #1754

Job	Run time
run ci on redhat ubi (lua-resty-worker-events, t/plugin/[a-k]*)	30m 21s
run ci on redhat ubi (lua-resty-worker-events, t/plugin/[a-k]*)	29m 9s
run ci on redhat ubi (lua-resty-worker-events, t/plugin/[l-z]*)	29m 46s
run ci on redhat ubi (lua-resty-worker-events, t/plugin/[l-z]*)	29m 46s
run ci on redhat ubi (lua-resty-worker-events, t/admin t/cli t/config-center-yaml t/control t/cor...	22m 10s
run ci on redhat ubi (lua-resty-worker-events, t/admin t/cli t/config-center-yaml t/control t/cor...	22m 10s
run ci on redhat ubi (lua-resty-worker-events, t/node t/pubsub t/router t/script t/secret t/strea...	21m 30s
run ci on redhat ubi (lua-resty-worker-events, t/node t/pubsub t/router t/script t/secret t/strea...	21m 30s
run ci on redhat ubi (lua-resty-events, t/plugin/[a-k]*)	28m 34s
run ci on redhat ubi (lua-resty-events, t/plugin/[a-k]*)	28m 34s
run ci on redhat ubi (lua-resty-events, t/plugin/[l-z]*)	29m 7s
run ci on redhat ubi (lua-resty-events, t/plugin/[l-z]*)	29m 7s
run ci on redhat ubi (lua-resty-events, t/admin t/cli t/config-center-yaml t/control t/core t/deb...	22m 44s
run ci on redhat ubi (lua-resty-events, t/admin t/cli t/config-center-yaml t/control t/core t/deb...	22m 44s
run ci on redhat ubi (lua-resty-events, t/node t/pubsub t/router t/script t/secret t/stream-node ...	19m 49s
run ci on redhat ubi (lua-resty-events, t/node t/pubsub t/router t/script t/secret t/stream-node ...	19m 49s
	6h 46m 50s

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