fix: Implement short living ens resolver for Name component after send flow

[OGPoyraz]

Description

Similarly what's being done in MetaMask/metamask-extension#37047 this PR implements a short living cache for Name component to use after send flow.

Changelog

CHANGELOG entry: Show ENS name in the confirmation after picking ENS recipient in send flow

Related issues

Fixes: #19072

Manual testing steps

1. Go to send flow
2. Pick ENS recipient
3. Proceed into confirmation - you should be able to see ENS in the confirmation now

Screenshots/Recordings

Before

After

Simulator.Screen.Recording.-.iPhone.16.Pro.-.2025-10-22.at.13.18.00.mov

Pre-merge author checklist

• I’ve followed MetaMask Contributor Docs and MetaMask Mobile Coding Standards.
• I've completed the PR template to the best of my ability
• I’ve included tests if applicable
• I’ve documented my code using JSDoc format if applicable
• I’ve applied the right labels on the PR (see labeling guidelines). Not required for external contributors.

Pre-merge reviewer checklist

• I've manually tested the PR (e.g. pull and build branch, run the app, test code being changed).
• I confirm that this PR addresses all acceptance criteria described in the ticket it closes and includes the necessary testing evidence such as recordings and or screenshots.

---

Note

Adds a 5‑minute ENS resolution cache used post-send and surfaces cached ENS in Name display; integrates with validation and updates tests.

• ENS caching (5 min TTL):
  • Add useSendFlowEnsResolutions with setResolvedAddress and getResolvedENSName to cache ENS per chainId:address.
• Send flow integration:
  • Update useNameValidation to call setResolvedAddress(chainId, ensName, resolvedAddress) when isEvmSendType and ENS resolves.
• Display name integration:
  • Update useDisplayName to read ensName via getResolvedENSName(variation, value) and prioritize it in name selection.
• Tests:
  • New tests for cache storage, expiration, chain separation, overwrite behavior.
  • Extend useNameValidation tests to assert cache writes only for EVM/ENS.
  • Add useDisplayName test to verify ENS name is returned.

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[jpuri]

Hey @OGPoyraz : is it possible that we save the resolution as metadata in transaction, that will be better than caching resolution result ?

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
96.4% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[vinistevam]

❤️