feat: add max support for selected source tokens

[jpuri]

Description

For money deposits add max support for selected source tokens.

Changelog

CHANGELOG entry:

Related issues

Fixes: https://consensyssoftware.atlassian.net/browse/CONF-1541

Manual testing steps

NA

Screenshots/Recordings

NA

Pre-merge author checklist

• I've followed MetaMask Contributor Docs and MetaMask Mobile Coding Standards.
• I've completed the PR template to the best of my ability
• I've included tests if applicable
• I've documented my code using JSDoc format if applicable
• I've applied the right labels on the PR (see labeling guidelines). Not required for external contributors.

Performance checks (if applicable)

• I've tested on Android
  • Ideally on a mid-range device; emulator is acceptable
• I've tested with a power user scenario
  • Use these power-user SRPs to import wallets with many accounts and tokens
• I've instrumented key operations with Sentry traces for production performance metrics
  • See trace() for usage and addToken for an example

For performance guidelines and tooling, see the Performance Guide.

Pre-merge reviewer checklist

• I've manually tested the PR (e.g. pull and build branch, run the app, test code being changed).
• I confirm that this PR addresses all acceptance criteria described in the ticket it closes and includes the necessary testing evidence such as recordings and or screenshots.

[github-actions]

CLA Signature Action: All authors have signed the CLA. You may need to manually re-run the blocking PR check if it doesn't pass in a few minutes.

[github-actions]

🔍 Smart E2E Test Selection

• Selected E2E tags: SmokeConfirmations, SmokeMoney
• Selected Performance tags: None (no tests recommended)
• Risk Level: medium
• AI Confidence: 88%

click to see 🤖 AI reasoning details

E2E Test Selection:
The PR introduces a new noNetworkFeeChains feature flag and a useMoneyDepositNoFee hook that suppresses insufficient balance/pay-token alerts and modifies the Max button behavior for money account deposit/withdraw transactions on no-fee chains.

Key changes:

1. Feature flag selector (selectMetaMaskPayFlags): Adds noNetworkFeeChains field — affects all consumers of this selector in pay/money flows.
2. useMoneyDepositNoFee hook (new): Determines if a money deposit/withdraw is fee-free based on chain or token.
3. useInsufficientBalanceAlert: Suppresses alert when isMoneyNoFee=true — directly affects confirmation alert display.
4. useInsufficientPayTokenBalanceAlert: Suppresses source-network insufficient balance alert when isMoneyNoFee=true.
5. useTransactionCustomAmount: Prevents auto-setting max for money account deposits (new behavior).
6. custom-amount-info.tsx: Shows Max button when isMoneyDepositNoFee=true even if hasMax is false.

SmokeConfirmations is required because the changes directly modify confirmation alert hooks and the custom amount info UI component used in transaction confirmations.

SmokeMoney is required because the changes are specifically about MetaMask Money/Card deposit flows — the moneyAccountDeposit and moneyAccountWithdraw transaction types, the no-fee chain feature flag, and the Max button behavior in the money deposit UI.

The test file changes are unit test updates only (adding noNetworkFeeChains: [] to mocks) — no new E2E test infrastructure changes.

No performance-sensitive code paths are affected (no rendering loops, no heavy computation, no asset loading changes).

Performance Test Selection:
The changes are focused on alert suppression logic and UI button visibility for money deposit/withdraw flows. No performance-sensitive code paths are affected — no rendering loops, no heavy asset loading, no app launch or onboarding flows. Performance tests are not warranted.

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