fix(tests): the trigger backfill assumed keyword calls; three fixtures pass positionally (#4099)

CI run 6937 red — 3 collection errors, `positional argument follows keyword
argument`, in the three integration fixtures that call the service positionally
(`create_rule(topic.id, uid, "title", "statement")`). The script that added
`when_to_apply=` to 15 fixtures inserted it as the FIRST argument, which is
valid only where every other argument is already a keyword.

Moved to the last argument in every call, which is legal in both styles, and
the continuation indent now matches the surrounding arguments.

Also repairs self-inflicted damage: the same script added a trigger to the two
tests in test_rule_trigger_required.py whose whole purpose is to call the
creators WITHOUT one. They would have stopped raising and the guard's own
proof would have inverted — a test that passes for the opposite reason than
the one it names, which is worse than a failing one.

Caught by ast.parse across tests/ rather than by the next CI round trip.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01821k5B3Ysecp9fNYs92Kuy

tests/test_integration_rule_versions.py

@@ -57,11 +57,11 @@ async def constraint():
     book = await rulebooks_svc.create_rulebook(uid, "History fixtures")
     topic = await rulebooks_svc.create_topic(book.id, uid, "ci")
     rule = await rulebooks_svc.create_rule(
-        when_to_apply="when the moment this fixture stands in for arises",
         topic.id, uid, "The runner has no bash",
         "Write every `run:` step in POSIX sh.",
         why="the image ships no bash",
         verify_with="read the workflow's shell setting",
+        when_to_apply="when the moment this fixture stands in for arises",
     )
 
     return {"uid": uid, "rule_id": rule.id}
@@ -259,8 +259,8 @@ async def test_a_version_cannot_be_read_through_a_DIFFERENT_rule(constraint):
         rule = await s.get(Rule, constraint["rule_id"])
         topic_id = rule.topic_id
     sibling = await rulebooks_svc.create_rule(
-        when_to_apply="when the moment this fixture stands in for arises",
         topic_id, constraint["uid"], "A different rule", "Unrelated.",
+        when_to_apply="when the moment this fixture stands in for arises",
     )
 
     assert await rulebooks_svc.get_rule_version(