chore: adds non-evm staking

[zone-live]

Explanation

Adds a tron_staking state structure to support staking APY data for Tron.

Tron staking uses a different approach than EVM pooled staking, so rather than forcing Tron into the existing pooled_staking structure (which would require nullable vault-specific fields and conditional logic), this introduces a dedicated Tron specific state.

We opted for a chain-specific key (tron_staking) rather than a generic non_evm_staking map because different non-EVM chains may have significantly different data requirements. This approach is more explicit and if we add other non-EVM chains later, they can have their own state structures.

The idea next is for the mobile client to: 1 - Call EarnController.refreshNonEvmStakingApy() with Tron witness API fetcher 2 - Use the selectors in selectEarnTokens to populate earnToken.experience.apr with the Tron APY 3- Get rid of the useTronStakeApy hook calls from components

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] Adds tron_staking state with APY fetch/get, new selectors, exports, and tests; also tightens selector typings.

• EarnController:
  • Add TronStakingState and include tron_staking in EarnControllerState and metadata; default is null.
  • Implement refreshTronStakingApy(apyFetcher) and getTronStakingApy(); update state with { apy, lastUpdated }.
• Selectors:
  • Add selectTronStaking and selectTronStakingApy; export from index.ts.
  • Minor: strengthen return types on existing lending selectors.
• Tests:
  • Add tests for TRON staking defaults, APY refresh/overwrite/error, and selectors.
  • Update metadata-related snapshots to account for tron_staking.

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