Fix red develop 9b6817e9461d

The merge lane found `develop` red at `9b6817e9461d547fdce05abd0fbbe1d60460a061` on its own: no queued PR merges until it is fixed. Failing (tests and gate stages): - `frontend-smoke-playwright-load-isolated` - … and 1 more: read them in the gate log, as untrusted output The whole gate log: artifact `7848` on lane task 8690. Make `develop` pass its full gate again. Open a PR as usual: the merge lane merges a PR that fixes some of these and adds no failure even while `develop` is red.

Fixed red develop: e2e sessionLogin now re-mints a fixture session that the signed-out probe answers with 204 (company-setup-self-service.spec.ts:127). The spec failed before the fix and passes after it (6 passed); quick gate green. PR #6525 queued in the merge lane.