Pipe: Added userName / password logic for alter pipe replace statement

[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 adds logic to incorporate user authentication into the alter pipe replace statement by enriching source and connector attributes with the current user's name. The key changes include refactoring the loop variable names for clarity, extracting the userName from the session in both TreeConfigTaskVisitor and TableConfigTaskVisitor, and invoking dedicated methods to check and enrich user-related attributes.

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.

File	Description
iotdb-core/datanode/src/main/java/org/apache/iotdb/db/queryengine/plan/execution/config/TreeConfigTaskVisitor.java	Refactored extractor attribute loop and added userName extraction along with enrichment of source and connector attributes.
iotdb-core/datanode/src/main/java/org/apache/iotdb/db/queryengine/plan/execution/config/TableConfigTaskVisitor.java	Added final qualifiers to parameters and variables, enforced admin check using userName, and applied similar enrichment logic as in TreeConfigTaskVisitor.