UI E2E: Clarify HITL e2e helper parameter name and error message

[choo121600]

Why

The HITL review page objects named their assertion parameter dagId, but some callers pass a run id instead, so the name misrepresented what the helper actually checks and could mislead anyone reading the specs.

The setup helper's generic "HITL response failed" message also hid which step actually failed, making a failing run harder to diagnose.

and drop the redundant 60s timeout override so the modal assertion uses the default timeout.

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[choo121600]

Thanks :)