[Discover next] Fixes dataset navigator menu styling & search error toast

[ashwin-pc]

Description

• Fixes Dataset picker style to show the scrollbar correctly
• Fixes the search error toast to only show up once

Issues Resolved

Screenshot

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

[sejli]

🙌

[codecov]

Codecov Report

Attention: Patch coverage is 33.33333% with 2 lines in your changes missing coverage. Please review.

Project coverage is 63.64%. Comparing base (d68c589) to head (7a18e00).
Report is 239 commits behind head on main.

Files with missing lines	Patch %	Lines
...c/plugins/data/public/search/search_interceptor.ts	33.33%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #7566      +/-   ##
==========================================
- Coverage   63.64%   63.64%   -0.01%     
==========================================
  Files        3629     3629              
  Lines       79522    79525       +3     
  Branches    12604    12604              
==========================================
+ Hits        50611    50612       +1     
- Misses      25842    25844       +2     
  Partials     3069     3069              

Flag	Coverage Δ
Linux_1	30.76% <33.33%> (+<0.01%)	⬆️
Linux_2	55.58% <ø> (ø)
Linux_3	40.22% <33.33%> (+<0.01%)	⬆️
Linux_4	31.57% <33.33%> (+<0.01%)	⬆️
Windows_1	30.77% <33.33%> (+<0.01%)	⬆️
Windows_2	55.53% <ø> (ø)
Windows_3	40.23% <33.33%> (-0.01%)	⬇️
Windows_4	31.57% <33.33%> (+<0.01%)	⬆️

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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-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-7566-to-2.x
# Cherry-pick the merged commit of this pull request and resolve the conflicts
git cherry-pick -x --mainline 1 2b7dbe056f57cb6d2b74c498cbc2aee5bc9edda1
# Push it to GitHub
git push --set-upstream origin backport/backport-7566-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-7566-to-2.x.

[opensearch-trigger-bot]

The backport to 2.16 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/OpenSearch-Dashboards/backport-2.16 2.16
# Navigate to the new working tree
pushd ../.worktrees/OpenSearch-Dashboards/backport-2.16
# Create a new branch
git switch --create backport/backport-7566-to-2.16
# Cherry-pick the merged commit of this pull request and resolve the conflicts
git cherry-pick -x --mainline 1 2b7dbe056f57cb6d2b74c498cbc2aee5bc9edda1
# Push it to GitHub
git push --set-upstream origin backport/backport-7566-to-2.16
# Go back to the original working tree
popd
# Delete the working tree
git worktree remove ../.worktrees/OpenSearch-Dashboards/backport-2.16

Then, create a pull request where the base branch is 2.16 and the compare/head branch is backport/backport-7566-to-2.16.

[AMoo-Miki]

Backported with #7574