chore: enable batched account creation for Solana

[gantunesr]

Description

Bumps @metamask/solana-wallet-snap from ^2.7.4 to ^2.8.0 and enables batch account creation for the Solana provider.

Changelog

CHANGELOG entry: null

Related issues

Fixes: https://consensyssoftware.atlassian.net/browse/MUL-1651

Manual testing steps

Feature: Solana batched account creation

  Scenario: user imports a power user SRP with multiple Solana accounts
    Given Backup & Sync is enabled
    And the user imports a new power user SRP

    When account discovery completes
    Then all multichain Solana accounts are correctly created

Screenshots/Recordings

Not applicable

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.

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.

Made with Cursor

---

Note

Medium Risk
Changes multichain account creation behavior for the Solana provider (now batched), which could affect account discovery/creation flows; other providers remain unchanged. Also bumps the Solana snap dependency, introducing potential upstream behavior changes.

Overview
Enables batched account creation for Solana by passing a Solana-specific provider config (createAccounts.batched: true) into MultichainAccountService initialization, while keeping BTC/TRX configs non-batched.

Adds unit coverage asserting the per-provider batched flag, and bumps @metamask/solana-wallet-snap from ^2.7.4 to ^2.8.0 (lockfile updated accordingly).

^{Reviewed by Cursor Bugbot for commit b04c4ac. Bugbot is set up for automated code reviews on this repo. Configure here.}

[github-actions]

🔍 Smart E2E Test Selection

⏭️ Smart E2E selection skipped - draft PR

All E2E tests pre-selected.

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[socket-security]

Review the following changes in direct dependencies. Learn more about Socket for GitHub.

Diff	Package	Supply Chain Security	Vulnerability	Quality	Maintenance	License
	npm/​@​metamask/​solana-wallet-snap@​2.7.4 ⏵ 2.8.0	-1		+1	+4

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[socket-security]

All alerts resolved. Learn more about Socket for GitHub.

This PR previously contained dependency changes with security issues that have been resolved, removed, or ignored.

Ignoring alerts on:

• npm/@metamask/solana-wallet-snap@2.8.0

View full report

[gantunesr]

@SocketSecurity ignore @metamask/solana-wallet-snap

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

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

See analysis details on SonarQube Cloud

[github-actions]

✅ E2E Fixture Validation — Schema is up to date
16 value mismatches detected (expected — fixture represents an existing user).
View details

[gantunesr]

https://github.com/SocketSecurity ignore @metamask/solana-wallet-snap@2.8.0

[gantunesr]

This is manually tested but I'm not adding the recordings since it exposes several seed phrases

[ccharly]

@SocketSecurity ignore npm/@metamask/solana-wallet-snap@2.8.0

This is our Snap.