Ignore claude code related files

[JackieTien97]

This pull request updates the test exclusion list in the pom.xml configuration for the iotdb-core/relational-grammar module. The change ensures that the correct generated files for the relational SQL grammar are excluded from certain plugin operations, likely to prevent unnecessary processing or test runs on these files.

Test configuration updates:

• Updated the <excludes> section to exclude all relevant generated files for the relational SQL grammar, replacing previous exclusions for SqlLexer files with new exclusions for RelationalSqlParser.java, RelationalSqlLexer.java, RelationalSqlLexer.interp, RelationalSql.interp, RelationalSqlBaseListener.java, and RelationalSqlListener.java.

[sonarqubecloud]

Quality Gate passed

Issues
0 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

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 39.81%. Comparing base (7afedfe) to head (8a0ba8d).
⚠️ Report is 1 commits behind head on master.

Additional details and impacted files

@@             Coverage Diff              @@
##             master   #17453      +/-   ##
============================================
- Coverage     39.82%   39.81%   -0.01%     
  Complexity      312      312              
============================================
  Files          5135     5135              
  Lines        347075   347075              
  Branches      44224    44224              
============================================
- Hits         138209   138184      -25     
- Misses       208866   208891      +25     

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