fix(zcncore): improved transaction confirm

[cnlangzi]

Changes

Fixes

• fixed improve transaction confirmation performance from sharders gosdk#214

Tests

Tasks to complete before merging PR:

• Ensure system tests are passing. If not Run them manually to check for any regressions 📋
• Do any new system tests need added to test this change? do any existing system tests need updated? If so create a PR at 0chain/system_test
• Merge your system tests PR to master AFTER merging this PR

Associated PRs (Link as appropriate):

• gosdk: Perf/improve blockchain confirm gosdk#459

[service-0chain]

Manual system tests [failure] with the following config

config	value
tests skipped	FALSE
system-tests	master
gosdk	perf/improve_blockchain_confirm
zboxcli	perf/improve_blockchain_confirm
zwalletcli	staging
0chain	staging
blobber	staging
authorizer	staging
0box	staging
0block	staging
0dns	staging
explorer	staging
0proxy	staging
0search	staging

[peterlimg]

lgtm