feat: multichain currency rate polling

[bergeron]

Description

This PR uses the CurrencyRateController to poll native currency prices across chains. This will keep prices updated in state across all networks.

Because we're polling across all networks, it's no longer necessary to trigger updates when switching chains, so these places have been removed. Once we start showing tokens across all networks, "switching chains" will become a less relevant action.

Related issues

Manual testing steps

1. Verify fiat prices are correct for the native currency on a network
2. Switch to a network with a different native currency,
3. Verify fiat prices are correct for that network

Screenshots/Recordings

Before

After

No visual changes, but native token prices should still be accurate across networks and when changing currencies.

Screen.Recording.2024-11-14.at.9.55.13.AM.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.

[github-actions]

CLA Signature Action: All authors have signed the CLA. You may need to manually re-run the blocking PR check if it doesn't pass in a few minutes.

[sonarcloud]

Quality Gate passed

Issues
2 New issues
0 Accepted issues

Measures
0 Security Hotspots
73.7% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[github-actions]

Bitrise

✅✅✅ pr_smoke_e2e_pipeline passed on Bitrise! ✅✅✅

Commit hash: 2e9dff3
Build link: https://app.bitrise.io/app/be69d4368ee7e86d/pipelines/f93ecf08-0de3-45d1-af18-6d47026e42ab

Note

• You can kick off another pr_smoke_e2e_pipeline on Bitrise by removing and re-applying the Run Smoke E2E label on the pull request

[tommasini]

THIS looks very good! Can we have some recordings of this? (Like switching between accounts and currencies)
I will approve but it's good to have recordings of this on the PR description!

[bergeron]

Can we have some recordings of this

added to PR description