Fix flaky test in 130_script_fields_profile.yml

[gaobinlong]

Description

From the failure message: java.lang.AssertionError: Failure at [painless/130_script_fields_profile:69]: profile.shards.0.fetch.0.children.0.breakdown.set_next_reader_count didn't match expected value: profile.shards.0.fetch.0.children.0.breakdown.set_next_reader_count: expected Integer [1] but was Integer [2], there maybe two segments generated after indexing, so we need to forcemerge the index before search.

Related Issues

Resolves #19243

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 d08649a: 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 d08649a: 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 d08649a: 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 d08649a: 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 8a0a4ad: 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 efc5819: SUCCESS

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 72.81%. Comparing base (af75e0b) to head (efc5819).
⚠️ Report is 2 commits behind head on main.

Additional details and impacted files

@@             Coverage Diff              @@
##               main   #19356      +/-   ##
============================================
- Coverage     72.84%   72.81%   -0.03%     
+ Complexity    69857    69806      -51     
============================================
  Files          5674     5674              
  Lines        320901   320901              
  Branches      46394    46394              
============================================
- Hits         233756   233674      -82     
- Misses        68205    68307     +102     
+ Partials      18940    18920      -20     

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