chore: read bridge gas fee estimates from gasFeeEstimatesByChainId

[micaelae]

Explanation

Changes the gasFeeEstimates source used in quote metadata calculations to the chain-agnostic gasFeeEstimatesByChainId state. Resulting values will be the same as before but this sets up the clients for removing global selected network references

See CHANGELOG for required client changes

Draft extension PR: MetaMask/metamask-extension#37593

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 quote fee/metadata computation and introduces a breaking state shape change for selector consumers; behavior should be equivalent but missing/incorrect chain-scoped gas estimates could change displayed network fees.

Overview
selectBridgeQuotes now derives EVM gas fee inputs from gasFeeEstimatesByChainId keyed by the quote’s srcChainId, removing reliance on a global selected-network gas estimate (breaking for consumers that pass gasFeeEstimates into BridgeAppState).

Quote metadata calculation is hardened to handle missing gas estimates (defaults fees to zero), and tests were updated/added to cover the new state shape and the “no gas estimates available” case. Minor follow-ups include using toHex for chain-id formatting, switching a few || fallbacks to ??, and adjusting some TypeScript generic naming in BridgeController metrics tracking.

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