Prevent send if no remaining allowance available

### What is this about?

- On send screen, update the send allowance banner to show updated allowance available for user
- Check this function: https://github.com/MetaMask/delegation-framework/blob/0018e694d7a9ac2cb5435ff0e0ac05930cc40063/src/enforcers/MultiTokenPeriodEnforcer.sol#L100
- Check this test file: https://github.com/MetaMask/delegation-framework/blob/main/test/enforcers/MultiTokenPeriodEnforcer.t.sol

### Scenario

_No response_

### Design

_No response_

### Technical Details

_No response_

### Threat Modeling Framework

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### Acceptance Criteria

_No response_

### Stakeholder review needed before the work gets merged

- [ ] Engineering (needed in most cases)
- [ ] Design
- [ ] Product
- [ ] QA (automation tests are required to pass before merging PRs but not all changes are covered by automation tests - please review if QA is needed beyond automation tests)
- [ ] Security
- [ ] Legal
- [ ] Marketing
- [ ] Management (please specify)
- [ ] Other (please specify)

### References

_No response_

Start with the referenced MultiTokenPeriodEnforcer.sol function and test/enforcers/MultiTokenPeriodEnforcer.t.sol, then trace how the MetaMask send screen displays the allowance banner. Done means the banner shows the updated remaining allowance and sending is prevented when no allowance remains; the issue does not name the extension files or provide acceptance criteria.

Written by the indexing model from the issue text.