fix(hugegraph): wait for every Store before server start

[weicao]

Summary

Child PR into dev/hugegraph-release-1.0.

Official 3-store compose waits for every Store /v1/health before Server starts. start-server.sh only waited for the first FQDN. After #3419, pd.initial-store-count matches the Store list, so one healthy Store is not enough for Cluster_OK.

Wait for every address in STORE_POD_FQDNS. Fail closed if any Store never becomes healthy.

Test

bash addons/hugegraph/tests/start_server_test.sh
bash addons/hugegraph/tests/contract_test.sh
HugeGraph addon offline contracts passed

Main PR: #3412

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 0.00%. Comparing base (9b1cc33) to head (5210f81).

Additional details and impacted files

@@                    Coverage Diff                    @@
##           dev/hugegraph-release-1.0   #3420   +/-   ##
=========================================================
  Coverage                       0.00%   0.00%           
=========================================================
  Files                             69      69           
  Lines                           7275    7275           
=========================================================
  Misses                          7275    7275           

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