[To dev/1.3] Load: preserve pending tablets when parser fails (#18487) (#18509)

[Caideyipi]

Description

As the title said.

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This PR has:

• been self-reviewed.
  • concurrent read
  • concurrent write
  • concurrent read and write
• added documentation for new or modified features or behaviors.
• added Javadocs for most classes and all non-trivial methods.
• added or updated version, license, or notice information
• added comments explaining the "why" and the intent of the code wherever would not be obvious
  for an unfamiliar reader.
• added unit tests or modified existing tests to cover new code paths, ensuring the threshold
  for code coverage.
• added integration tests.
• been tested in a test IoTDB cluster.

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Key changed/added classes (or packages if there are too many classes) in this PR

[codecov]

Codecov Report

❌ Patch coverage is 88.46154% with 3 lines in your changes missing coverage. Please review.
✅ Project coverage is 44.49%. Comparing base (ac360ca) to head (07f173b).
⚠️ Report is 3 commits behind head on rc/1.3.8.

Files with missing lines	Patch %	Lines
...dTreeStatementDataTypeConvertExecutionVisitor.java	88.46%	3 Missing ⚠️

Additional details and impacted files

@@              Coverage Diff               @@
##             rc/1.3.8   #18604      +/-   ##
==============================================
+ Coverage       44.47%   44.49%   +0.01%     
  Complexity        198      198              
==============================================
  Files            3641     3641              
  Lines          246688   246724      +36     
  Branches        30305    30313       +8     
==============================================
+ Hits           109722   109775      +53     
+ Misses         136966   136949      -17     

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