perf(queries): Index implicit role rules by tag

[scttcper]

Only check implicit-role selectors for the element's tag. Keep the existing selector matching and specificity order.

Named-button query on a 501-element fixture, median of nine paired batches:

Environment	Before	After	Reduction
jsdom 20.0.0	24.740 ms	22.623 ms	8.6%
jsdom 30.1.0	5.332 ms	2.015 ms	62.2%
Happy DOM 20.14.5	0.543 ms	0.302 ms	44.4%
Chrome 153	0.308 ms	0.188 ms	39.1%
Firefox 142	0.817 ms	0.358 ms	56.1%
WebKit 26	0.404 ms	0.191 ms	52.7%

matches() calls drop from 5,300 to 1,200 per query. These are synthetic query timings, not whole-suite gains. Textbox cases benefit less, with regressions of 3.3% in Happy DOM and 1.2% in WebKit.

Full evidence and runner: 30 benchmark cases, 35,320 behavior comparisons with no differences. Node stayed at 24.14, below jsdom 30.1's declared 24.15 minimum.

[codesandbox-ci]

This pull request is automatically built and testable in CodeSandbox.

To see build info of the built libraries, click here or the icon next to each commit SHA.

Latest deployment of this branch, based on commit 85d321d:

Sandbox	Source
react-testing-library-examples	Configuration