chore: use fcast.id domain

[horsefacts]

Motivation

Update the fname resolver tests to use the real fname domain, fcast.id.

Merge Checklist

Choose all relevant options below by adding an x now or at any time before submitting for review

• [x] The PR title adheres to the conventional commits standard
• [x] The PR has been tagged with change type label(s) (i.e. documentation, feature, bugfix, or chore)
• [x] The PR's changes adhere to all the requirements in the contribution guidelines
• [x] All commits have been signed

---

PR-Codex overview

Focus of the PR:

This PR focuses on updating the FnameResolverTestSuite.sol file by changing the FNAME_SERVER_URL constant and DNS_ENCODED_NAME constant to use the new domain "fcast.id" instead of "farcaster.xyz".

Detailed summary:

• Changed the FNAME_SERVER_URL constant from "https://fnames.farcaster.xyz/ccip/{sender}/{data}.json" to "https://fnames.fcast.id/ccip/{sender}/{data}.json".
• Updated the DNS_ENCODED_NAME constant to reflect the new domain "alice.fcast.id" instead of "alice.farcaster.xyz".
• Modified the ADDR_QUERY_CALLDATA constant to use the nameHash encoded value of "alice.fcast.id" instead of "alice.farcaster.xyz".

✨ Ask PR-Codex anything about this PR by commenting with /codex {your question}

[github-actions[bot]]

Coverage after merging horsefacts/fcast-id-domain into main will be

98.76%

Coverage Report

File	Stmts	Branches	Funcs	Lines	Uncovered Lines
src
Bundler.sol	100%	100%	100%	100%
FnameResolver.sol	100%	100%	100%	100%
IdRegistry.sol	100%	100%	100%	100%
KeyRegistry.sol	100%	100%	100%	100%
StorageRegistry.sol	100%	100%	100%	100%
src/lib
Signatures.sol	100%	100%	100%	100%
TransferHelper.sol	0%	0%	0%	0%	12, 17, 20, 20, 20
TrustedCaller.sol	100%	100%	100%	100%