chore: bump @metamask/multichain-account-service to ^2.1.0 (MetaMask#22092)

## **Description**

This PR bumps `@metamask/multichain-account-service` to `^2.1.0`, which
includes performance improvements for lower end devices during account
creation. Changelog:

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

## **Changelog**

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CHANGELOG entry: null

## **Related issues**

Fixes: https://consensyssoftware.atlassian.net/browse/MUL-1230

## **Manual testing steps**

```gherkin
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**

<!-- If applicable, add screenshots and/or recordings to visualize the
before and after of your change. -->

### **Before**

<!-- [screenshots/recordings] -->

### **After**

<!-- [screenshots/recordings] -->

## **Pre-merge author checklist**

- [x] I’ve followed [MetaMask Contributor
Docs](https://github.com/MetaMask/contributor-docs) and [MetaMask Mobile
Coding
Standards](https://github.com/MetaMask/metamask-mobile/blob/main/.github/guidelines/CODING_GUIDELINES.md).
- [x] I've completed the PR template to the best of my ability
- [x] I’ve included tests if applicable
- [x] I’ve documented my code using [JSDoc](https://jsdoc.app/) format
if applicable
- [x] I’ve applied the right labels on the PR (see [labeling
guidelines](https://github.com/MetaMask/metamask-mobile/blob/main/.github/guidelines/LABELING_GUIDELINES.md)).
Not required for external contributors.

## **Pre-merge reviewer checklist**

- [x] I've manually tested the PR (e.g. pull and build branch, run the
app, test code being changed).
- [x] 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.

<!-- CURSOR_SUMMARY -->
---

> [!NOTE]
> Updates `@metamask/multichain-account-service` from `^2.0.1` to
`^2.1.0`.
> 
> <sup>Written by [Cursor
Bugbot](https://cursor.com/dashboard?tab=bugbot) for commit
c10179c. This will update automatically
on new commits. Configure
[here](https://cursor.com/dashboard?tab=bugbot).</sup>
<!-- /CURSOR_SUMMARY -->

Author: mathieuartu

package.json

@@ -244,7 +244,7 @@
     "@metamask/metamask-eth-abis": "3.1.1",
     "@metamask/mobile-wallet-protocol-core": "^0.3.1",
     "@metamask/mobile-wallet-protocol-wallet-client": "^0.2.1",
-    "@metamask/multichain-account-service": "^2.0.1",
+    "@metamask/multichain-account-service": "^2.1.0",
     "@metamask/multichain-api-client": "^0.7.0",
     "@metamask/multichain-api-middleware": "1.2.4",
     "@metamask/multichain-network-controller": "^2.0.0",

yarn.lock

@@ -7923,9 +7923,9 @@ __metadata:
   languageName: node
   linkType: hard
 
-"@metamask/multichain-account-service@npm:^2.0.1":
-  version: 2.0.1
-  resolution: "@metamask/multichain-account-service@npm:2.0.1"
+"@metamask/multichain-account-service@npm:^2.1.0":
+  version: 2.1.0
+  resolution: "@metamask/multichain-account-service@npm:2.1.0"
   dependencies:
     "@ethereumjs/util": "npm:^9.1.0"
     "@metamask/base-controller": "npm:^9.0.0"
@@ -7948,7 +7948,7 @@ __metadata:
     "@metamask/providers": ^22.0.0
     "@metamask/snaps-controllers": ^14.0.0
     webextension-polyfill: ^0.10.0 || ^0.11.0 || ^0.12.0
-  checksum: 10/787f4bdb486cd32a52951edb66a384a1676086e5daab9fc4318cf353a12938aab5d297936c6bcb3face2b725a858820d569fc57c9014b8f6bcd7bc71347801d0
+  checksum: 10/d6e8497c41a0ae1195b6ec859bf7b6ba0427b46aa01afb36e040a6d8393ed43104cacafbeb255cfc146398998c60ff3ae6d1622aa6f45662ae3a80b0f4f8beca
   languageName: node
   linkType: hard
 
@@ -34328,7 +34328,7 @@ __metadata:
     "@metamask/mobile-provider": "npm:^3.0.0"
     "@metamask/mobile-wallet-protocol-core": "npm:^0.3.1"
     "@metamask/mobile-wallet-protocol-wallet-client": "npm:^0.2.1"
-    "@metamask/multichain-account-service": "npm:^2.0.1"
+    "@metamask/multichain-account-service": "npm:^2.1.0"
     "@metamask/multichain-api-client": "npm:^0.7.0"
     "@metamask/multichain-api-middleware": "npm:1.2.4"
     "@metamask/multichain-network-controller": "npm:^2.0.0"