Mikesposito/refactor/simplify controller

[wantedsystem]

Explanation

Refactor / simplify config registry controller

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
Changes controller state shape and polling/stop APIs, which can break consumers relying on fetchError, filtered network storage, or token-based stop behavior. Network selection semantics also change (filtering moved to selectors; duplicate chainId handling now last-write-wins).

Overview
Simplifies ConfigRegistryController by removing fetchError and the NetworkConfigEntry wrapper, storing raw RegistryNetworkConfig objects keyed by chainId.

Moves network filtering from fetch-time to consumption-time by adding selectNetworks and selectFeaturedNetworks (with reselect), and updates behavior to store all API networks while featured/active/non-testnet filtering is applied via selectors. Duplicate chainId resolution is simplified to last-write-wins and the warning/priority logic is removed.

Polling/stop behavior is streamlined: the messenger stopPolling action now stops all polling sessions (no token), delayed/placeholder-token logic is removed, and error handling now only reports via captureException without mutating state/fallback bookkeeping. Tests, build config (exclude test-helpers.ts), and changelog are updated accordingly.

^{Written by Cursor Bugbot for commit fd924fb. This will update automatically on new commits. Configure here.}

[cursor]

Cursor Bugbot has reviewed your changes and found 1 potential issue.

[mikesposito]

@wantedsystem I think we can merge this PR and continue working on the main feature branch. Thanks for addressing the feedback!