fix(transaction-pay-controller): submit direct mUSD fiat deposits

[matthewwalsh0]

Explanation

Direct mUSD fiat quotes for Money Account deposits can settle directly into the Money Account, so they do not need a Relay quote or Relay execute path.

This PR moves that path to a Ramps-funded, sponsored Money Account vault batch. After fiat settlement, the Fiat strategy refreshes the vault calldata through getAmountData, submits the nested approve/deposit calls through TransactionController:addTransactionBatch, and lets the client publish hook handle 7702/Sentinel sponsorship.

It also keeps a local QA funding path behind client-provided fiat test options so the settlement step can be exercised without creating a real on-ramp order.

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