core: avoid getting region twice

[rleungx]

What problem does this PR solve?

Issue Number: Close #xxx

What is changed and how does it work?

Check List

Tests

• Unit test

Release note

None.

[ti-chi-bot]

[FORMAT CHECKER NOTIFICATION]

Notice: To remove the do-not-merge/needs-linked-issue label, please provide the linked issue number on one line in the PR body, for example: Issue Number: close #123 or Issue Number: ref #456, multiple issues should use full syntax for each issue and be separated by a comma, like: Issue Number: close #123, ref #456.

_{📖 For more info, you can check the "Linking issues" section in the CONTRIBUTING.md.}

[rleungx]

/retest

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 76.23%. Comparing base (9f24e3a) to head (fd217a1).
Report is 425 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #9079      +/-   ##
==========================================
+ Coverage   73.67%   76.23%   +2.55%     
==========================================
  Files         440      468      +28     
  Lines       48837    71427   +22590     
==========================================
+ Hits        35983    54453   +18470     
- Misses       9785    13569    +3784     
- Partials     3069     3405     +336     

Flag	Coverage Δ
unittests	76.23% <100.00%> (+2.55%)	⬆️

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[ti-chi-bot]

@rleungx: The following test failed, say /retest to rerun all failed tests or /retest-required to rerun all mandatory failed tests:

Test name	Commit	Details	Required	Rerun command
pull-integration-realcluster-test	fd217a1	link	true	/test pull-integration-realcluster-test

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[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: nolouch

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[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2025-02-14 04:55:52.278097979 +0000 UTC m=+591594.674320039: ☑️ agreed by nolouch.