dxf: merge OnFinished into RunSubtask

[D3Hunter]

What problem does this PR solve?

Issue Number: ref #57497

Problem Summary:

What changed and how does it work?

function of OnFinished is part of run subtask, if OnFinished failed, the subtask should fail too, so we merge OnFinished into RunSubtask

Check List

Tests

• Unit test
• Integration test
• Manual test (add detailed scripts or steps below)
• No need to test

  • I checked and no code files have been changed.

Side effects

• Performance regression: Consumes more CPU
• Performance regression: Consumes more Memory
• Breaking backward compatibility

Documentation

• Affects user behaviors
• Contains syntax changes
• Contains variable changes
• Contains experimental features
• Changes MySQL compatibility

Release note

Please refer to Release Notes Language Style Guide to write a quality release note.

None

[tiprow]

Hi @D3Hunter. Thanks for your PR.

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[codecov]

Codecov Report

Attention: Patch coverage is 13.33333% with 26 lines in your changes missing coverage. Please review.

Project coverage is 75.1510%. Comparing base (71e70af) to head (781d217).
Report is 12 commits behind head on master.

Additional details and impacted files

@@               Coverage Diff                @@
##             master     #58098        +/-   ##
================================================
+ Coverage   73.1346%   75.1510%   +2.0164%     
================================================
  Files          1675       1720        +45     
  Lines        461810     472225     +10415     
================================================
+ Hits         337743     354882     +17139     
+ Misses       103314      95191      -8123     
- Partials      20753      22152      +1399     

Flag	Coverage Δ
integration	49.1969% <0.0000%> (?)
unit	72.4569% <13.3333%> (+0.1863%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Components	Coverage Δ
dumpling	52.6910% <ø> (ø)
parser	∅ <ø> (∅)
br	62.4189% <ø> (+16.4265%)	⬆️

[GMHDBJD]

LGTM

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: GMHDBJD, tangenta

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Needs approval from an approver in each of these files:

• OWNERS [GMHDBJD,tangenta]
• pkg/ddl/OWNERS [GMHDBJD,tangenta]
• pkg/disttask/OWNERS [GMHDBJD,tangenta]

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[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2024-12-10 08:06:57.302626553 +0000 UTC m=+339407.391429096: ☑️ agreed by tangenta.
• 2024-12-10 08:30:43.477536648 +0000 UTC m=+340833.566339185: ☑️ agreed by GMHDBJD.