fix(ansible): the playbook variables partial on classes; Run again assertion matches the link (#5331, #5332)

CI run 8705 on 0c72892: the schedule page's no-inline-style guard caught
_playbook_vars.html (shared by the run and schedule forms), and the run
page's Run again assertion left out the link's class.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

tests/core/test_ansible_runs_page.py

@@ -182,7 +182,7 @@ async def test_run_detail_titles_the_run_and_keeps_the_trail(app):
     assert page.index(">zulu<") < page.index(">alpha<")
     assert '<span class="tone-crit">1 failed</span> · 1 ok' in page and ">3 ok<" in page
     assert 'href="/ansible/playbooks/builtin/update.yml"' in page             # the playbook it ran
-    assert 'href="/ansible/playbooks/builtin/update.yml?from=dddd4444#run-form">Run again</a>' in page
+    assert 'href="/ansible/playbooks/builtin/update.yml?from=dddd4444#run-form" class="btn btn-sm btn-ghost">Run again</a>' in page
     main = page[page.index("<main"):]
     assert 'style="' not in main[:main.index('id="run-output"')]             # no hand-set colours
     assert not hex_colours(main), hex_colours(main)