Fix button within button error

[kmcginnes]

Description

Fix an error only shown in the console reporting a button within a button.

The Collapsible trigger is a button, and the content of the trigger contains an add/remove button. To fix it I nest the content in a div and use asChild.

Validation

• Ensured search results still expand
• Ensured vertex can still be added

Related Issues

• None

Check List

• I confirm that my contribution is made under the terms of the Apache 2.0
  license.
• I have run pnpm checks to ensure code compiles and meets standards.
• I have run pnpm test to check if all tests are passing.
• I have covered new added functionality with unit tests if necessary.
• I have added an entry in the Changelog.md.

[codecov]

Codecov Report

❌ Patch coverage is 0% with 5 lines in your changes missing coverage. Please review.
✅ Project coverage is 62.11%. Comparing base (c5affc5) to head (9f4b3a2).
⚠️ Report is 24 commits behind head on main.

Files with missing lines	Patch %	Lines
...ges/graph-explorer/src/components/SearchResult.tsx	0.00%	3 Missing and 2 partials ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##             main    #1447       +/-   ##
===========================================
+ Coverage   47.81%   62.11%   +14.30%     
===========================================
  Files         382      306       -76     
  Lines        8525     6338     -2187     
  Branches     3159     2220      -939     
===========================================
- Hits         4076     3937      -139     
+ Misses       3070     1683     -1387     
+ Partials     1379      718      -661     

Flag	Coverage Δ
unittests	62.11% <0.00%> (+14.30%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.
• 📦 JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.