Fix the check for expected value of number of arenas for flight tranport

[rishabhmaurya]

Description

Ideally, this check should have never been added as it prevents setting the number of direct arenas to more than 1.

Related Issues

Resolves #[Issue number to be closed when this PR is merged]

Check List

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

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.
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[github-actions]

✅ Gradle check result for a0a154c: SUCCESS

[codecov]

Codecov Report

❌ Patch coverage is 33.33333% with 2 lines in your changes missing coverage. Please review.
✅ Project coverage is 73.10%. Comparing base (a036313) to head (a0a154c).
⚠️ Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
...pensearch/arrow/flight/bootstrap/ServerConfig.java	33.33%	1 Missing and 1 partial ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##               main   #19820      +/-   ##
============================================
- Coverage     73.15%   73.10%   -0.06%     
+ Complexity    71118    71101      -17     
============================================
  Files          5754     5754              
  Lines        325298   325300       +2     
  Branches      47052    47053       +1     
============================================
- Hits         237975   237797     -178     
- Misses        68154    68382     +228     
+ Partials      19169    19121      -48     

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[opensearch-trigger-bot]

The backport to 3.3 failed:

The process '/usr/bin/git' failed with exit code 128

To backport manually, run these commands in your terminal:

# Navigate to the root of your repository
cd $(git rev-parse --show-toplevel)
# Fetch latest updates from GitHub
git fetch
# Create a new working tree
git worktree add ../.worktrees/OpenSearch/backport-3.3 3.3
# Navigate to the new working tree
pushd ../.worktrees/OpenSearch/backport-3.3
# Create a new branch
git switch --create backport/backport-19820-to-3.3
# Cherry-pick the merged commit of this pull request and resolve the conflicts
git cherry-pick -x --mainline 1 e14101ed1ac534207232e20981dcdc12e0cc9bf8
# Push it to GitHub
git push --set-upstream origin backport/backport-19820-to-3.3
# Go back to the original working tree
popd
# Delete the working tree
git worktree remove ../.worktrees/OpenSearch/backport-3.3

Then, create a pull request where the base branch is 3.3 and the compare/head branch is backport/backport-19820-to-3.3.