[MDS] Refactor dropdown header + Aggregate view UI

[huyaboo]

Description

Refactors the UI Components for the datasource dropdown menu and the aggregate view. Specifically, the disabled cursor is removed and the dropdown header has the text vertically aligned. Some minor enhancements also made to aggregate view as well.

Issues Resolved

#6533

Screenshot

Screen.Recording.2024-04-18.at.1.27.18.PM.mov

Testing the changes

Changelog

• skip

Check List

• All tests pass
  • yarn test:jest
  • yarn test:jest_integration
• New functionality includes testing.
• New functionality has been documented.
• Update CHANGELOG.md
• Commits are signed per the DCO using --signoff

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 32.97%. Comparing base (d2d410b) to head (14921ef).
Report is 12 commits behind head on main.

❗ Current head 14921ef differs from pull request most recent head 531b4ec. Consider uploading reports for the commit 531b4ec to get more accurate results

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #6541      +/-   ##
==========================================
+ Coverage   32.93%   32.97%   +0.04%     
==========================================
  Files        2260     2262       +2     
  Lines       45769    45824      +55     
  Branches     7200     7213      +13     
==========================================
+ Hits        15075    15112      +37     
- Misses      29984    29999      +15     
- Partials      710      713       +3     

Flag	Coverage Δ
Linux_1	32.97% <ø> (+0.04%)	⬆️

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[zhyuanqi]

This is minor. I think the titleComponet should be outside EuiContextMenuPanel since it is using a EuiPopoverTitle. I feel like it is not part of the EuiContextMenuPanel

[huyaboo]

Fixed.

[zhyuanqi]

Thanks

[zhongnansu]

lgtm!

[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-Dashboards/backport-2.x 2.x
# Navigate to the new working tree
pushd ../.worktrees/OpenSearch-Dashboards/backport-2.x
# Create a new branch
git switch --create backport/backport-6541-to-2.x
# Cherry-pick the merged commit of this pull request and resolve the conflicts
git cherry-pick -x --mainline 1 e34ca2b593ecf8d8c6caf547381cdddf5548a53c
# Push it to GitHub
git push --set-upstream origin backport/backport-6541-to-2.x
# Go back to the original working tree
popd
# Delete the working tree
git worktree remove ../.worktrees/OpenSearch-Dashboards/backport-2.x

Then, create a pull request where the base branch is 2.x and the compare/head branch is backport/backport-6541-to-2.x.

[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-Dashboards/backport-2.x 2.x
# Navigate to the new working tree
pushd ../.worktrees/OpenSearch-Dashboards/backport-2.x
# Create a new branch
git switch --create backport/backport-6541-to-2.x
# Cherry-pick the merged commit of this pull request and resolve the conflicts
git cherry-pick -x --mainline 1 e34ca2b593ecf8d8c6caf547381cdddf5548a53c
# Push it to GitHub
git push --set-upstream origin backport/backport-6541-to-2.x
# Go back to the original working tree
popd
# Delete the working tree
git worktree remove ../.worktrees/OpenSearch-Dashboards/backport-2.x

Then, create a pull request where the base branch is 2.x and the compare/head branch is backport/backport-6541-to-2.x.