fix for concurrentmodificationexception with linkedhashmap

[sbcd90]

Issue #, if available:

Description of changes:
fix for concurrentmodificationexception with linkedhashmap

CheckList:

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[opensearch-trigger-bot]

The backport to 2.7 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/alerting/backport-2.7 2.7
# Navigate to the new working tree
pushd ../.worktrees/alerting/backport-2.7
# Create a new branch
git switch --create backport-1255-to-2.7
# Cherry-pick the merged commit of this pull request and resolve the conflicts
git cherry-pick -x --mainline 1 36d81e464c28d35ac46a4e6b89841b4340d77b6f
# Push it to GitHub
git push --set-upstream origin backport-1255-to-2.7
# Go back to the original working tree
popd
# Delete the working tree
git worktree remove ../.worktrees/alerting/backport-2.7

Then, create a pull request where the base branch is 2.7 and the compare/head branch is backport-1255-to-2.7.

[opensearch-trigger-bot]

The backport to 2.8 failed:

The process '/usr/bin/git' failed with exit code 1

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/alerting/backport-2.8 2.8
# Navigate to the new working tree
pushd ../.worktrees/alerting/backport-2.8
# Create a new branch
git switch --create backport-1255-to-2.8
# Cherry-pick the merged commit of this pull request and resolve the conflicts
git cherry-pick -x --mainline 1 36d81e464c28d35ac46a4e6b89841b4340d77b6f
# Push it to GitHub
git push --set-upstream origin backport-1255-to-2.8
# Go back to the original working tree
popd
# Delete the working tree
git worktree remove ../.worktrees/alerting/backport-2.8

Then, create a pull request where the base branch is 2.8 and the compare/head branch is backport-1255-to-2.8.

[opensearch-trigger-bot]

The backport to 2.9 failed:

The process '/usr/bin/git' failed with exit code 1

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/alerting/backport-2.9 2.9
# Navigate to the new working tree
pushd ../.worktrees/alerting/backport-2.9
# Create a new branch
git switch --create backport-1255-to-2.9
# Cherry-pick the merged commit of this pull request and resolve the conflicts
git cherry-pick -x --mainline 1 36d81e464c28d35ac46a4e6b89841b4340d77b6f
# Push it to GitHub
git push --set-upstream origin backport-1255-to-2.9
# Go back to the original working tree
popd
# Delete the working tree
git worktree remove ../.worktrees/alerting/backport-2.9

Then, create a pull request where the base branch is 2.9 and the compare/head branch is backport-1255-to-2.9.

[opensearch-trigger-bot]

The backport to 2.10 failed:

The process '/usr/bin/git' failed with exit code 1

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/alerting/backport-2.10 2.10
# Navigate to the new working tree
pushd ../.worktrees/alerting/backport-2.10
# Create a new branch
git switch --create backport-1255-to-2.10
# Cherry-pick the merged commit of this pull request and resolve the conflicts
git cherry-pick -x --mainline 1 36d81e464c28d35ac46a4e6b89841b4340d77b6f
# Push it to GitHub
git push --set-upstream origin backport-1255-to-2.10
# Go back to the original working tree
popd
# Delete the working tree
git worktree remove ../.worktrees/alerting/backport-2.10

Then, create a pull request where the base branch is 2.10 and the compare/head branch is backport-1255-to-2.10.