refactor: multiprocessing helper

[NguyenHoangSon96]

Closes #

Proposed Changes

Briefly describe your proposed changes:

Checklist

• CHANGELOG.md updated
• Rebased/mergeable
• A test has been added if appropriate
• Tests pass
• Commit messages are conventional
• Sign CLA (if not already signed)

[codecov]

Codecov Report

❌ Patch coverage is 86.85345% with 61 lines in your changes missing coverage. Please review.
✅ Project coverage is 87.12%. Comparing base (a022daa) to head (a206151).

Files with missing lines	Patch %	Lines
influxdb_client_3/write_client/client/write_api.py	85.96%	40 Missing ⚠️
...nfluxdb_client_3/write_client/_sync/rest_client.py	90.07%	13 Missing ⚠️
...write_client/client/util/multiprocessing_helper.py	25.00%	6 Missing ⚠️
influxdb_client_3/__init__.py	94.73%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #222      +/-   ##
==========================================
+ Coverage   78.90%   87.12%   +8.22%     
==========================================
  Files          36       28       -8     
  Lines        2607     2082     -525     
==========================================
- Hits         2057     1814     -243     
+ Misses        550      268     -282     

☔ View full report in Codecov by Harness.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.