Implemented load function for different time columns

[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

[Copilot]

Pull request overview

This PR implements support for loading TsFiles with different time column configurations. When loading a TsFile into a table, the system now detects if the time column is at a different position or is present/absent compared to the existing table schema, and sets a flag to trigger appropriate decoding.

Changes:

• Added detection logic for time column position mismatches during table schema validation
• Propagated needDecode4DifferentTimeColumn flag through the load pipeline
• Updated method signatures to accept an AtomicBoolean parameter for tracking time column differences
• Added support for TIME column category in schema validation and creation
• Improved code quality with refactoring (PathUtils usage, final modifiers, comment corrections)

Reviewed changes

Copilot reviewed 19 out of 19 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
TableHeaderSchemaValidator.java	Added logic to detect time column position differences and support TIME column creation
LoadTsFileTableSchemaCache.java	Added AtomicBoolean flag to track time column differences
LoadTsFileAnalyzer.java	Propagates needDecode4TimeColumn flag to LoadTsFile statement
Metadata.java	Updated interface with new parameter and improved javadoc
TableMetadataImpl.java	Updated implementation to pass through new parameter
LoadTsFile.java	Added needDecode4TimeColumn field and methods
RelationPlanner.java	Passes needDecode4TimeColumn flag to LoadTsFileNode
LoadTsFileNode.java	Added needDecode4TimeColumn parameter
LoadSingleTsFileNode.java	Added needDecodeTsFile parameter for early-return check
LogicalPlanVisitor.java	Updated LoadTsFileNode construction with new parameter
TsTable.java	Made columnSchemaMap final (code quality improvement)
LoadTsFileManager.java	Refactored to use PathUtils.isTableModelDatabase()
Test files	Updated mocks to use new method signature
IoTDBLoadTsFileIT.java	Added comprehensive test for time column scenarios
TsFileTableGenerator.java	Added filtering logic for TIME columns (with bug)

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[Copilot]

The filtering logic for TIME columns is inconsistent. The schemas are filtered by checking if the measurement name equals "time" (line 86), but the column categories are filtered by checking if the category is TIME (line 102). If a TIME column has a different name (e.g., "time1"), it won't be filtered from schemaWithoutTime but will be filtered from the column categories, causing a size mismatch between the lists passed to the Tablet constructor. Consider filtering schemas by checking the corresponding category from columnCategoryList instead of hardcoding the name check.