Disable resource limits in bn254 wasm test

[leighmcculloch]

What

Disable resource limits in the import_ark_bn254 example.

Why

Env::default() in tests enforces mainnet limits. The refresh in stellar/rs-soroban-sdk#1946 (issue stellar/rs-soroban-sdk#1931) updates those limits to match current mainnet, lowering the per-transaction instruction ceiling from 600,000,000 to the true value of 400,000,000. This example consumes ~404,556,039 instructions, so under the refreshed ceiling it panics with HostError: Error(Budget, ExceededLimit).

Known limitations

N/A

---

Generated by Claude Code

[leighmcculloch]

The failing build-and-test (account, latest, …) check is a transient CI infrastructure error, not a problem with this change. The job died during setup while downloading the stellar-cli binary — curl: (35) Recv failure: Connection reset by peer — before anything compiled or ran. This diff only touches import_ark_bn254/src/test.rs, so it can't affect the account example. It should clear on a re-run of the failed job.

---

Generated by Claude Code

[Copilot]

Pull request overview

Disables Mainnet resource-limit enforcement for the intentionally expensive BN254 WASM test.

Changes:

• Documents why the WASM test exceeds production limits.
• Calls disable_resource_limits() alongside the unlimited budget reset.

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.