fix: robinhood wrong decimals token activity send

[maxime-oe]

Description

/!\ NOT INTENDED for merge unless decided

This PR is only informative:

• Fixes: https://consensyssoftware.atlassian.net/browse/WPN-1589?atlOrigin=eyJpIjoiYWJhMmUyMzg2NTVmNDBmZGFmYjU1NGU1MGIyYjY3NWYiLCJwIjoiaiJ9
• It DOES NOT solve the source of the issue - which is still unknown (the fix may be simple)
• Might cause externalities - check with Swaps team - such as putting USDG on the spot.

Changelog

CHANGELOG entry:

Related issues

Fixes:

Manual testing steps

Feature: my feature name

  Scenario: user [verb for user action]
    Given [describe expected initial app state]

    When user [verb for user action]
    Then [describe expected outcome]

Screenshots/Recordings

Before

After

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.

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🔍 Smart E2E Test Selection

⏭️ Smart E2E selection skipped - PR targets a release or stable branch (release/* or stable)

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[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
100.0% Duplication on New Code

See analysis details on SonarQube Cloud