fix(tianmu):Even if a primary key is defined, duplicate data may be imported.(#1648)

[konghaiya]

Summary about this PR

Issue Number: close #1648

Tests Check List

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

Changelog

• New Feature
• Bug Fix
• Performance Improvement
• Build/Testing/CI/CD
• Documentation
• Not for changelog (changelog entry is not required)

Documentation

• Affects user behaviors
• Contains syntax changes
• Contains variable changes
• Contains experimental features

[mergify]

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[codecov]

Codecov Report

Patch coverage has no change and project coverage change: -0.05 ⚠️

Comparison is base (74b5b05) 55.18% compared to head (902e6bc) 55.13%.

❗ Current head 902e6bc differs from pull request most recent head c44d07a. Consider uploading reports for the commit c44d07a to get more accurate results

Additional details and impacted files

@@                 Coverage Diff                 @@
##           stonedb-5.7-dev    #1766      +/-   ##
===================================================
- Coverage            55.18%   55.13%   -0.05%     
===================================================
  Files                 2031     2031              
  Lines               431436   431429       -7     
===================================================
- Hits                238081   237863     -218     
- Misses              193355   193566     +211     

Impacted Files	Coverage Δ
storage/tianmu/core/tianmu_table.cpp	67.84% <ø> (+0.11%)	⬆️

... and 67 files with indirect coverage changes

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