Optimized the logger when table does not exist in DN heartbeat && Pipe: Fixed the OPC UA Sink key getter logic and potentail NPE when closing client && Load: Fixed the missing schema writing for "root" table

[Caideyipi]

Description

As the title said.

---

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 40.00000% with 15 lines in your changes missing coverage. Please review.
✅ Project coverage is 39.12%. Comparing base (f198b8e) to head (f6b52a6).
⚠️ Report is 1 commits behind head on master.

Files with missing lines	Patch %	Lines
...org/apache/iotdb/db/schemaengine/SchemaEngine.java	0.00%	7 Missing ⚠️
.../pipe/api/customizer/parameter/PipeParameters.java	66.66%	5 Missing ⚠️
...e/sink/protocol/opcua/client/IoTDBOpcUaClient.java	0.00%	2 Missing ⚠️
...iotdb/db/storageengine/load/LoadTsFileManager.java	0.00%	1 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##             master   #17063      +/-   ##
============================================
- Coverage     39.25%   39.12%   -0.13%     
  Complexity      282      282              
============================================
  Files          5105     5105              
  Lines        341457   341476      +19     
  Branches      43517    43523       +6     
============================================
- Hits         134026   133615     -411     
- Misses       207431   207861     +430     

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[sonarqubecloud]

Quality Gate passed

Issues
2 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud