Ignore BaseRestHandler unconsumed content check as it's always consumed

[dbwiddis]

Description

Removes the BaseRestHandler check for unconsumed content added in 687978b as this check was inadvertently made dead code (when using real HttpRequests and not mocked ones) in 1cd464d

Related Issues

Resolves #13011
Related to opensearch-project/flow-framework#638

Check List

• New functionality includes testing.
  • All tests pass
• [ ] New functionality has been documented. (This behavior was undocumented and remains so.)
  • [ ] New functionality has javadoc added (No new functionality)
• Failing checks are inspected and point to the corresponding known issue(s) (See: Troubleshooting Failing Builds)
• Commits are signed per the DCO using --signoff
• Commit changes are listed out in CHANGELOG.md file (See: Changelog)
• [ ] Public documentation issue/PR created (This behavior was undocumented and remains so.)

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 50a25ca: 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 2028570: 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?

[cwperks]

LGTM!

[github-actions]

❌ Gradle check result for 099c127: 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 1c666ea: 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?

[github-actions]

✅ Gradle check result for 1c666ea: SUCCESS

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 71.33%. Comparing base (b15cb0c) to head (1c666ea).
Report is 195 commits behind head on main.

Additional details and impacted files

@@             Coverage Diff              @@
##               main   #13290      +/-   ##
============================================
- Coverage     71.42%   71.33%   -0.09%     
- Complexity    59978    60561     +583     
============================================
  Files          4985     5039      +54     
  Lines        282275   285432    +3157     
  Branches      40946    41337     +391     
============================================
+ Hits         201603   203618    +2015     
- Misses        63999    65002    +1003     
- Partials      16673    16812     +139     

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[opensearch-trigger-bot]

The backport to 2.x 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-2.x 2.x
# Navigate to the new working tree
pushd ../.worktrees/OpenSearch/backport-2.x
# Create a new branch
git switch --create backport/backport-13290-to-2.x
# Cherry-pick the merged commit of this pull request and resolve the conflicts
git cherry-pick -x --mainline 1 0282e64bb25a8485526a1b6bf584ac2b9495f219
# Push it to GitHub
git push --set-upstream origin backport/backport-13290-to-2.x
# Go back to the original working tree
popd
# Delete the working tree
git worktree remove ../.worktrees/OpenSearch/backport-2.x

Then, create a pull request where the base branch is 2.x and the compare/head branch is backport/backport-13290-to-2.x.