Refactor RefreshStats with Builder pattern

[pado0]

Description

This PR refactors the RefreshStats class to use the Builder pattern instead of relying on multiple constructors.

By adopting the Builder pattern, it becomes easier to evolve the stats API, add new metrics, and maintain backward compatibility without forcing disruptive constructor changes.

Based on the related issue:

1. Added a Builder and deprecated the existing constructors.
2. Replaced usages of constructors in code and tests with the new Builder.

There are multiple stats-related classes that need similar refactoring, and we are addressing them in priority order. This PR covers RefreshStats as part of that effort.

Related Issues

Related to #19225

Check List

• Functionality includes testing.

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.
For more information on following Developer Certificate of Origin and signing off your commits, please check here.

[github-actions]

❌ Gradle check result for 1e1b027: 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 1e1b027: 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 1e1b027: null

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?

[sandeshkr419]

Minor correction on deprecation version, rest LGTM.

Thanks for refactoring this @pado0!

[github-actions]

❕ Gradle check result for c128664: 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.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 73.02%. Comparing base (d822f62) to head (64461dc).
⚠️ Report is 7 commits behind head on main.

Additional details and impacted files

@@             Coverage Diff              @@
##               main   #19835      +/-   ##
============================================
- Coverage     73.09%   73.02%   -0.08%     
+ Complexity    71060    71010      -50     
============================================
  Files          5754     5754              
  Lines        325230   325295      +65     
  Branches      47035    47036       +1     
============================================
- Hits         237735   237547     -188     
- Misses        68359    68630     +271     
+ Partials      19136    19118      -18     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.

[github-actions]

✅ Gradle check result for 64461dc: SUCCESS