Release/657.0.0 (#7041)

## Explanation

Minor release of `@metamask/multichain-account-service`.

Changelog:

```md
### Added

- Add per-provider throttling for non-EVM account creation to improve performance on low-end devices ([#7000](#7000))
  - Solana provider is now limited to 3 concurrent account creations by default when creating multichain account groups.
  - Other providers remain unthrottled by default.
```

Mobile test-drive PR:
MetaMask/metamask-mobile#21905 (QA'd ✅ )

## References

<!--
Are there any issues that this pull request is tied to?
Are there other links that reviewers should consult to understand these
changes better?
Are there client or consumer pull requests to adopt any breaking
changes?

For example:

* Fixes #12345
* Related to #67890
-->

## Checklist

- [x] I've updated the test suite for new or updated code as appropriate
- [x] I've updated documentation (JSDoc, Markdown, etc.) for new or
updated code as appropriate
- [x] I've communicated my changes to consumers by [updating changelogs
for packages I've
changed](https://github.com/MetaMask/core/tree/main/docs/contributing.md#updating-changelogs),
highlighting breaking changes as necessary
- [ ] I've prepared draft pull requests for clients and consumer
packages to resolve any breaking changes

<!-- CURSOR_SUMMARY -->
---

> [!NOTE]
> Publish @metamask/multichain-account-service 2.1.0 adding per-provider
throttling (Solana capped at 3 concurrent) and update dependents; bump
monorepo to 657.0.0.
> 
> - **multichain-account-service
(`packages/multichain-account-service`)**:
> - Release `2.1.0` with per-provider throttling for non-EVM account
creation.
>     - Solana provider limited to 3 concurrent creations by default.
>   - Update `CHANGELOG.md` and version references.
> - **Dependents**:
> - Bump `@metamask/multichain-account-service` devDependency to
`^2.1.0` in `packages/account-tree-controller` and
`packages/assets-controllers`.
> - **Repo**:
>   - Bump monorepo version to `657.0.0`.
> 
> <sup>Written by [Cursor
Bugbot](https://cursor.com/dashboard?tab=bugbot) for commit
b4773ca. This will update automatically
on new commits. Configure
[here](https://cursor.com/dashboard?tab=bugbot).</sup>
<!-- /CURSOR_SUMMARY -->

Author: mathieuartu

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@metamask/core-monorepo",
-  "version": "656.0.0",
+  "version": "657.0.0",
   "private": true,
   "description": "Monorepo for packages shared between MetaMask clients",
   "repository": {

packages/account-tree-controller/package.json

@@ -63,7 +63,7 @@
     "@metamask/auto-changelog": "^3.4.4",
     "@metamask/keyring-api": "^21.0.0",
     "@metamask/keyring-controller": "^24.0.0",
-    "@metamask/multichain-account-service": "^2.0.1",
+    "@metamask/multichain-account-service": "^2.1.0",
     "@metamask/profile-sync-controller": "^26.0.0",
     "@metamask/providers": "^22.1.0",
     "@metamask/snaps-controllers": "^14.0.1",

packages/assets-controllers/package.json

@@ -91,7 +91,7 @@
     "@metamask/keyring-controller": "^24.0.0",
     "@metamask/keyring-internal-api": "^9.0.0",
     "@metamask/keyring-snap-client": "^8.0.0",
-    "@metamask/multichain-account-service": "^2.0.1",
+    "@metamask/multichain-account-service": "^2.1.0",
     "@metamask/network-controller": "^25.0.0",
     "@metamask/permission-controller": "^12.1.0",
     "@metamask/phishing-controller": "^15.0.0",

packages/multichain-account-service/CHANGELOG.md

@@ -7,6 +7,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [2.1.0]
+
 ### Added
 
 - Add per-provider throttling for non-EVM account creation to improve performance on low-end devices ([#7000](https://github.com/MetaMask/core/pull/7000))
@@ -256,7 +258,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Add `MultichainAccountService` ([#6141](https://github.com/MetaMask/core/pull/6141)), ([#6165](https://github.com/MetaMask/core/pull/6165))
   - This service manages multichain accounts/wallets.
 
-[Unreleased]: https://github.com/MetaMask/core/compare/@metamask/[email protected]
+[Unreleased]: https://github.com/MetaMask/core/compare/@metamask/[email protected]
+[2.1.0]: https://github.com/MetaMask/core/compare/@metamask/[email protected]...@metamask/[email protected]
 [2.0.1]: https://github.com/MetaMask/core/compare/@metamask/[email protected]...@metamask/[email protected]
 [2.0.0]: https://github.com/MetaMask/core/compare/@metamask/[email protected]...@metamask/[email protected]
 [1.6.2]: https://github.com/MetaMask/core/compare/@metamask/[email protected]...@metamask/[email protected]

packages/multichain-account-service/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@metamask/multichain-account-service",
-  "version": "2.0.1",
+  "version": "2.1.0",
   "description": "Service to manage multichain accounts",
   "keywords": [
     "MetaMask",

yarn.lock

@@ -2577,7 +2577,7 @@ __metadata:
     "@metamask/keyring-api": "npm:^21.0.0"
     "@metamask/keyring-controller": "npm:^24.0.0"
     "@metamask/messenger": "npm:^0.3.0"
-    "@metamask/multichain-account-service": "npm:^2.0.1"
+    "@metamask/multichain-account-service": "npm:^2.1.0"
     "@metamask/profile-sync-controller": "npm:^26.0.0"
     "@metamask/providers": "npm:^22.1.0"
     "@metamask/snaps-controllers": "npm:^14.0.1"
@@ -2790,7 +2790,7 @@ __metadata:
     "@metamask/keyring-snap-client": "npm:^8.0.0"
     "@metamask/messenger": "npm:^0.3.0"
     "@metamask/metamask-eth-abis": "npm:^3.1.1"
-    "@metamask/multichain-account-service": "npm:^2.0.1"
+    "@metamask/multichain-account-service": "npm:^2.1.0"
     "@metamask/network-controller": "npm:^25.0.0"
     "@metamask/permission-controller": "npm:^12.1.0"
     "@metamask/phishing-controller": "npm:^15.0.0"
@@ -4165,7 +4165,7 @@ __metadata:
   languageName: node
   linkType: hard
 
-"@metamask/multichain-account-service@npm:^2.0.1, @metamask/multichain-account-service@workspace:packages/multichain-account-service":
+"@metamask/multichain-account-service@npm:^2.1.0, @metamask/multichain-account-service@workspace:packages/multichain-account-service":
   version: 0.0.0-use.local
   resolution: "@metamask/multichain-account-service@workspace:packages/multichain-account-service"
   dependencies: