feat(net): optimize the logic of obtaining block ID

[xxo1shine]

What does this PR do?
optimize the logic of obtaining block ID

Why are these changes required?

This PR has been tested by:

• Unit Tests
• Manual Testing

Follow up

Extra details

[codecov-commenter]

Codecov Report

Merging #5009 (14e9047) into release_v4.7.1 (f1f9353) will increase coverage by 0.02%.
The diff coverage is 66.66%.

📣 This organization is not using Codecov’s GitHub App Integration. We recommend you install it so Codecov can continue to function properly for your repositories. Learn more

@@                 Coverage Diff                  @@
##             release_v4.7.1    #5009      +/-   ##
====================================================
+ Coverage             54.81%   54.83%   +0.02%     
- Complexity             8243     8248       +5     
====================================================
  Files                   841      841              
  Lines                 49695    49699       +4     
  Branches               5454     5455       +1     
====================================================
+ Hits                  27238    27253      +15     
+ Misses                20326    20317       -9     
+ Partials               2131     2129       -2     

Impacted Files	Coverage Δ
...va/org/tron/core/net/service/sync/SyncService.java	30.28% <66.66%> (+0.46%)	⬆️
...c/main/java/org/tron/core/net/TronNetDelegate.java	41.80% <0.00%> (-0.82%)	⬇️
...mework/src/main/java/org/tron/core/db/Manager.java	53.52% <0.00%> (-0.16%)	⬇️
...n/java/org/tron/core/db2/core/SnapshotManager.java	74.07% <0.00%> (+0.56%)	⬆️
.../common/storage/rocksdb/RocksDbDataSourceImpl.java	69.92% <0.00%> (+1.12%)	⬆️
...a/org/tron/tool/litefullnode/LiteFullNodeTool.java	77.70% <0.00%> (+2.22%)	⬆️
...ain/java/org/tron/common/utils/ForkController.java	79.80% <0.00%> (+3.84%)	⬆️

📣 We’re building smart automated test selection to slash your CI/CD build times. Learn more