CI: do not run E2E tests when zero JS or PHP is modified; reorganize `rules`
>>> [!note] Migrated issue
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Reported by: [wim leers](https://www.drupal.org/user/99777)
Related to !977
>>>
<h3 id="overview">Overview</h3>
<p>The MR for <span class="drupalorg-gitlab-issue-link drupalorg-gitlab-link-wrapper"><a href="https://git.drupalcode.org/project/canvas/-/work_items/3586535" class="drupalorg-gitlab-link">https://git.drupalcode.org/project/canvas/-/work_items/3586535</a></span> is only touching PHPCS configuration.</p>
<p>Yet Playwright + Cypress E2E tests are running.</p>
<p>This is pointless and wasteful.</p>
<h3 id="proposed-resolution">Proposed resolution</h3>
<p>Match the optimized behavior for Cypress Unit + PHPUnit CI jobs: only run when relevant.</p>
<h3 id="ui-changes">User interface changes</h3>
<p>None.</p>
issue