bug: apisix 3.x lost config cache values after etcd compacted

[zlhgo]

Current Behavior

apisix/apisix/core/config_etcd.lua

Line 370 in df1cadb

local dir_res, headers = res.body.list or {}, res.headers

Perhaps should be

local dir_res, headers = res.body.node or {}, res.headers

#8675 has the same problem.

Expected Behavior

No response

Error Logs

No response

Steps to Reproduce

etcdctl compact `etcdctl get -w json /apisix/upstreams/ | jq .header.revision`

Perhaps this command should be run multiple times.
2. do not update related keys, for example global_rules.
3. wait a moment, the global plugins not working.

Environment

• APISIX version (run apisix version): 3.1.0
• Operating system (run uname -a):
• OpenResty / Nginx version (run openresty -V or nginx -V):
• etcd version, if relevant (run curl http://127.0.0.1:9090/v1/server_info):
• APISIX Dashboard version, if relevant:
• Plugin runner version, for issues related to plugin runners:
• LuaRocks version, for installation issues (run luarocks --version):

[zlhgo]

@tokers 为啥就没人理我呢。

[spacewander]

There are some paths that reloaded data may be in res.body.node
Try to fix it via #8736