Curio containers missing FilecoinPay address env var

## Context

During the [1.3.0 frontier smoke test](https://github.com/FilOzone/filecoin-services/issues/513), Curio runtime containers were missing the FilecoinPay contract address environment variable. This prevented cleanup/finality logic from running until the env mapping was manually patched.

The fix was applied locally on top of [foc-devnet PR #123](https://github.com/FilOzone/foc-devnet/pull/123), but this needs to be properly incorporated so future devnet runs don't hit the same issue.

## Expected Behavior

Curio containers should receive the FilecoinPay contract address at startup as part of the standard foc-devnet environment setup.

## Origin

Found during [Devnet 1.3.0 Frontier Smoke Report](https://github.com/FilOzone/filecoin-services/issues/513) — see "foc-devnet/tooling issues likely needing PRs" section.