feat(webui): Display full dataset names in the dataset selector popup.

[hoophalab]

Description

Long dataset names were being clipped in the dataset selector popup, making them difficult to read. This PR fixes this issue.

Checklist

• The PR satisfies the contribution guidelines.
• This is a breaking change and that has been indicated in the PR title, OR this isn't a
  breaking change.
• Necessary docs have been updated, OR no docs need to be updated.

Validation performed

The popup matches dataset name width

Summary by CodeRabbit

• Style
  • Updated the dataset selector dropdown so its popup no longer automatically matches the field width. The popup now sizes to its content, improving visibility of long dataset names and reducing truncation.
  • Prevents excessive empty space when options are narrow, enhancing layout responsiveness and readability.
  • No changes to selection behaviour or filtering. Affects the dataset control on the Search page.

---

• To see the specific tasks where the Asana app for GitHub is being used, see below:
  • https://app.asana.com/0/0/1211547865486280

[coderabbitai]

Walkthrough

A single UI change adds the prop popupMatchSelectWidth={false} to a Select in DatasetSelect.tsx, altering dropdown sizing behaviour. No other logic or control flow was modified.

Changes

Cohort / File(s)	Summary
Web UI Select prop update components/webui/client/src/pages/SearchPage/SearchControls/Dataset/DatasetSelect.tsx	Added prop popupMatchSelectWidth={false} to the Select component to decouple popup width from the select’s width.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~2 minutes

Pre-merge checks and finishing touches

✅ Passed checks (3 passed)

Check name	Status	Explanation
Title Check	✅ Passed	The title clearly encapsulates the main change by stating that the dataset selector popup will now display full dataset names, directly reflecting the addition of the width-adjusting prop.
Docstring Coverage	✅ Passed	No functions found in the changes. Docstring coverage check skipped.
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.

✨ Finishing touches

• 📝 Generate docstrings

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment

---

Thanks for using CodeRabbit! It's free for OSS, and your support helps us grow. If you like it, consider giving us a shout-out.

❤️ Share

• X
• Mastodon
• Reddit
• LinkedIn

_{Comment @coderabbitai help to get the list of available commands and usage tips.}

[davemarco]

lgtm

[junhaoliao]

deferring to @davemarco 's review