fix Use of weak random number generator

[huof6829]

Description

fix weak random in api and blocksync

Fixes #3537

Type of change

Please delete options that are not relevant.

• [] Bug fix (non-breaking change which fixes an issue)
• [] New feature (non-breaking change which adds functionality)
• [] Code refactor or improvement
• [] Breaking change (fix or feature that would cause a new or changed behavior of existing functionality)
• [] This change requires a documentation update

How Has This Been Tested?

Please describe the tests that you ran to verify your changes. Provide instructions so we can reproduce. Please also list any relevant details for your test configuration

• [] make test
• [] fullsync
• [] Other test (please specify)

Test Configuration:

• Firmware version:
• Hardware:
• Toolchain:
• SDK:

Checklist:

• [] My code follows the style guidelines of this project
• [] I have performed a self-review of my code
• [] I have commented my code, particularly in hard-to-understand areas
• [] I have made corresponding changes to the documentation
• [] My changes generate no new warnings
• [] I have added tests that prove my fix is effective or that my feature works
• [] New and existing unit tests pass locally with my changes
• [] Any dependent changes have been merged and published in downstream modules

[codecov]

Codecov Report

Merging #3578 (aa6943e) into master (a20e489) will decrease coverage by 1.31%.
The diff coverage is 56.95%.

@@            Coverage Diff             @@
##           master    #3578      +/-   ##
==========================================
- Coverage   75.43%   74.12%   -1.32%     
==========================================
  Files         247      255       +8     
  Lines       22845    23415     +570     
==========================================
+ Hits        17233    17356     +123     
- Misses       4685     5134     +449     
+ Partials      927      925       -2     

Impacted Files	Coverage Δ
action/protocol/staking/read_state.go	15.38% <0.00%> (ø)
api/grpcserver.go	79.49% <ø> (+0.55%)	⬆️
api/websocket.go	5.17% <0.00%> (-0.19%)	⬇️
blockchain/blockchain.go	0.89% <0.00%> (ø)
blockchain/filedao/filedao_legacy.go	85.80% <ø> (ø)
blockchain/filedao/filedao_v2.go	98.51% <ø> (ø)
blockchain/pubsubmanager.go	0.00% <0.00%> (ø)
blocksync/blocksync.go	72.90% <0.00%> (ø)
config/config.go	94.06% <ø> (+9.31%)	⬆️
db/db_bolt.go	72.51% <ø> (-0.19%)	⬇️
... and 75 more

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[dustinxie]

optimize to fill 4 bytes for every Uint32() call

[huof6829]

fixed