fix(util): use using statement for JAction in Reset_AllowsReuse test

[JasonXuDeveloper]

Summary

• Fixes CodeQL security alert #12 (cs/dispose-not-called-on-throw)
• Changes var action to using var action to ensure disposal on exception

Problem

The Reset_AllowsReuse test created a JAction and called Dispose() at the end. However, if Execute(), Reset(), or Do() threw an exception, the method would exit early and Dispose() would never be called.

Solution

Use a using declaration which guarantees disposal even when exceptions occur.

Test plan

• CI tests pass

🤖 Generated with Claude Code

[Copilot]

Pull request overview

This PR updates a unit test to ensure a JAction instance is always disposed, even if an exception occurs during execution, addressing a CodeQL cs/dispose-not-called-on-throw alert.

Changes:

• Replace var action = JAction.Create() with using var action = JAction.Create() to guarantee disposal on all code paths.
• Remove the now-redundant explicit action.Dispose() call at the end of the test.

[github-actions]

Auto-approved: Copilot review found no issues and Unity Tests passed (or were skipped for non-code changes).

[github-actions]

Unity Test Results

✅ EditMode: All tests passed
✅ PlayMode: All tests passed

Unity Version: 2022.3.55f1
Project Path: UnityProject

✅ All tests passed! The PR is ready for review.

View workflow run

Click here to view the full workflow run

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 85.01%. Comparing base (bc82092) to head (749a95f).
⚠️ Report is 4 commits behind head on master.

Additional details and impacted files

@@             Coverage Diff             @@
##           master     #611       +/-   ##
===========================================
+ Coverage   42.84%   85.01%   +42.17%     
===========================================
  Files          38       60       +22     
  Lines        4250     7683     +3433     
===========================================
+ Hits         1821     6532     +4711     
+ Misses       2429     1151     -1278     

Flag	Coverage Δ
ui	83.60% <ø> (+69.73%)	⬆️
util	90.36% <100.00%> (-0.01%)	⬇️

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

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.