Remove MultiCollectorWrapper and use MultiCollector in Lucene instead

[gaobinlong]

Description

As this comment said, once MultiCollector.getCollectors() method in Lucene is declared as public, we can use that method directly rather than creating a new similar class, this PR replaces MultiCollectorWrapper with MultiCollector in Lucene, and removes MultiCollectorWrapper as it was internally used and won't be used anymore.

Related Issues

No issue.

Check List

• Functionality includes testing.
• API changes companion pull request created, if applicable.
• Public documentation issue/PR created, if applicable.

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[github-actions]

❌ Gradle check result for db44cf9: FAILURE

Please examine the workflow log, locate, and copy-paste the failure(s) below, then iterate to green. Is the failure a flaky test unrelated to your change?

[github-actions]

✅ Gradle check result for db44cf9: SUCCESS

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 72.96%. Comparing base (2695c93) to head (6fd02e5).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@             Coverage Diff              @@
##               main   #19595      +/-   ##
============================================
- Coverage     73.06%   72.96%   -0.11%     
+ Complexity    70630    70542      -88     
============================================
  Files          5723     5722       -1     
  Lines        323513   323503      -10     
  Branches      46852    46851       -1     
============================================
- Hits         236384   236032     -352     
- Misses        68013    68400     +387     
+ Partials      19116    19071      -45     

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[github-actions]

❕ Gradle check result for 6fd02e5: UNSTABLE

Please review all flaky tests that succeeded after retry and create an issue if one does not already exist to track the flaky failure.

[sandeshkr419]

LGTM, just a minor code refactoring near the lines of code you are touching upon!

[sandeshkr419]

Not directly related to your code change, but can you also do Pattern Matching for instanceof in consecutive lines of code as well in the same method.