fix(ramps-controller): refresh countries catalog on app startup

[amitabh94]

Explanation

Stale persisted countries catalog data caused preset amounts (e.g. $100 / $250 / $500) to stay wrong after app restarts until the user changed region, even when the API had updated values.

This change is controller-only in @metamask/ramps-controller — no MetaMask Mobile or portfolio changes.

• Mark the countries catalog as non-persisted (persist: false) so restarts do not reuse stale catalog data.
• On init(), always refetch countries via getCountries() (including when userRegion is already set).
• After each successful getCountries(), re-sync userRegion preset amounts from the fresh catalog via #syncUserRegionFromCountriesCatalog.
• Tests cover init refetch, userRegion re-sync, and persistence metadata.

Consumers need a new @metamask/ramps-controller release; mobile can pick it up via the usual Core dependency bump.

References

• TRAM-3682
• Related: TRAM-3673

Checklist

• I've updated the test suite for new or updated code as appropriate
• I've updated documentation (JSDoc, Markdown, etc.) for new or updated code as appropriate
• I've communicated my changes to consumers by updating changelogs for packages I've changed
• I've introduced breaking changes in this PR and have prepared draft pull requests for clients and consumer packages to resolve them

Made with Cursor