fix: ignore attribute key with templates

[yeonjuan]

Checklist

• Addresses an existing open issue: fixes [BUG] False positive on @html-eslint/no-duplicate-attrs #392

Description

[Copilot]

Pull Request Overview

This pull request fixes issue #392 by modifying the no-duplicate-attrs ESLint rule to properly handle attribute keys that contain template expressions. The fix prevents false positive duplicate attribute warnings when template conditionals determine which attributes are rendered.

• Adds early return logic to skip duplicate checking for attributes with template expressions
• Adds test case to verify the fix works with Handlebars-style conditional templates
• Improves rule accuracy by avoiding false positives on templated attributes

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 1 comment.

File	Description
packages/eslint-plugin/lib/rules/no-duplicate-attrs.js	Adds template detection logic and early returns to skip duplicate checking for templated attribute keys
packages/eslint-plugin/tests/rules/no-duplicate-attrs.test.js	Adds test case with conditional template attributes to verify the fix

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 98.53%. Comparing base (662b74c) to head (b40b0bf).

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #393   +/-   ##
=======================================
  Coverage   98.52%   98.53%           
=======================================
  Files          82       82           
  Lines        2651     2654    +3     
  Branches      730      731    +1     
=======================================
+ Hits         2612     2615    +3     
  Misses         39       39           

Flag	Coverage Δ
unittest	98.53% <100.00%> (+<0.01%)	⬆️

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

Files with missing lines	Coverage Δ
...ages/eslint-plugin/lib/rules/no-duplicate-attrs.js	100.00% <100.00%> (ø)

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