refactor(ramps): streamline RampsController reset and abort logic

[georgeweiler]

Explanation

Refactors region-dependent reset behavior into a single helper and improves abort handling so dependent resources stay in sync.

Changes

• Introduce DEPENDENT_RESOURCE_KEYS and resetResource() so "reset one resource" is defined once and driven by getDefaultRampsControllerState().
• Refactor resetDependentResources() to call getDefaultRampsControllerState() once and loop over the keys instead of many manual assignments.
• Use resetResource(state, 'paymentMethods') in setSelectedProvider and setSelectedToken so payment methods are fully reset (including isLoading and error), fixing stale loading/error state when changing or clearing provider/token.
• Type reset helpers to accept Draft<RampsControllerState> so they can be used inside update() without casts and avoid TS2589.
• Update abort logic for dependent resources (abort handling aligned with the new reset flow).

Result

Single source of truth for default/reset state, less duplicated code, and correct clearing of paymentMethods (and optionally quotes.selected) on region or selection changes.

References

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

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Note

Medium Risk
Touches shared request-caching/abort and state-reset paths that affect providers/tokens/payment-methods/quotes flows; regressions could surface as stale loading/error state or incorrect request cancellation behavior.

Overview
Consolidates region-dependent state resets behind a shared resetResource helper (driven by getDefaultRampsControllerState) and reuses it from resetDependentResources, setSelectedProvider, and setSelectedToken to fully clear dependent paymentMethods state (including isLoading/error).

Improves request tracking by storing resourceType on pending requests and clarifies executeRequest behavior around deduplication/cache hits/loading/error updates, plus adds defensive handling for getCountries() to only persist array results. Test coverage is updated to assert the new reset semantics, defensive countries behavior, and cache-expiration behavior for non-success states; changelog entry added.

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[georgeweiler]

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