fix: add validation on data.method when using transport.request

[SuZhou-Joe]

Description

[Describe what this change achieves]

Issues Resolved

[List any issues this PR will resolve]

Check List

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[SuZhou-Joe]

#800

[codecov]

Codecov Report

Merging #801 (a8e2df0) into main (c821a2a) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main     #801   +/-   ##
=======================================
  Coverage   63.40%   63.40%           
=======================================
  Files         340      340           
  Lines       11540    11540           
  Branches     2238     2238           
=======================================
  Hits         7317     7317           
  Misses       3649     3649           
  Partials      574      574           

[xluo-aws]

@SuZhou-Joe , could you add a UT for it?

[xluo-aws]

? after data.method can be removed because it's checked for null in 65

[SuZhou-Joe]

Yes, good point and modify that to catch toUpperCase in case data.method is not a string.

[SuZhou-Joe]

@SuZhou-Joe , could you add a UT for it?

Sure, thanks for reminding.

[opensearch-trigger-bot]

The backport to 2.x failed:

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

To backport manually, run these commands in your terminal:

# Fetch latest updates from GitHub
git fetch
# Create a new working tree
git worktree add .worktrees/backport-2.x 2.x
# Navigate to the new working tree
cd .worktrees/backport-2.x
# Create a new branch
git switch --create backport/backport-801-to-2.x
# Cherry-pick the merged commit of this pull request and resolve the conflicts
git cherry-pick -x --mainline 1 13fb97fac3db5d6af6ef03b2bee8e04c80de4094
# Push it to GitHub
git push --set-upstream origin backport/backport-801-to-2.x
# Go back to the original working tree
cd ../..
# Delete the working tree
git worktree remove .worktrees/backport-2.x

Then, create a pull request where the base branch is 2.x and the compare/head branch is backport/backport-801-to-2.x.