chore: update CODEOWNERS.md with @MetaMask/wallet-integrations team ownership (#36577)

There are a ton of files/folders here that have been owned by Wallet
Integrations Team (formerly Wallet API Platform team) where we have not
been pinged for reviews because of missing CODEOWNER entries. This is my
fault. Its time to correct it.



<!-- CURSOR_SUMMARY -->
---

> [!NOTE]
> Updates CODEOWNERS to add `@MetaMask/wallet-integrations` ownership
across middleware/libs and E2E benchmarks/tests, replacing prior
`wallet-api-platform` entries.
> 
> - **CODEOWNERS updates**:
>   - **Add `@MetaMask/wallet-integrations` ownership** for:
>     - `app/scripts/lib/rpc-method-middleware`
>     - `shared/lib/caip25-caveat-merger.ts`
>     - `test/e2e/page-objects/benchmark`
>     - `test/e2e/playwright/benchmark`
>     - `test/e2e/flask/multichain-api`
>     - `app/scripts/lib/middleware/`
>     - `app/scripts/lib/createRPCMethodTrackingMiddleware.js`
>     - `app/scripts/lib/createMetamaskMiddleware.js`
>     - `app/scripts/lib/createOnboardingMiddleware.js`
>     - `app/scripts/lib/createMetaRPCHandler.js`
> -
`app/scripts/lib/createEvmMethodsToNonEvmAccountReqFilterMiddleware.ts`
>     - `app/scripts/lib/createHyperliquidReferralMiddleware.ts`
>     - `app/scripts/lib/metaRPCClientFactory.ts`
>     - `app/scripts/lib/createOriginThrottlingMiddleware.ts`
>     - `app/scripts/lib/createMainFrameOriginMiddleware.ts`
>     - `app/scripts/lib/createTracingMiddleware.ts`
> - **Replace** `@MetaMask/wallet-api-platform-engineers` ownership of
benchmark paths with `@MetaMask/wallet-integrations`.
> 
> <sup>Written by [Cursor
Bugbot](https://cursor.com/dashboard?tab=bugbot) for commit
b255573. This will update automatically
on new commits. Configure
[here](https://cursor.com/dashboard?tab=bugbot).</sup>
<!-- /CURSOR_SUMMARY -->

Author: adonesky1

.github/CODEOWNERS

@@ -149,6 +149,21 @@ test/e2e/helpers.js                       @MetaMask/qa
 test/e2e/mock-e2e-allowlist.js            @MetaMask/qa
 test/e2e/mock-e2e.js                      @MetaMask/qa
 
-# Wallet API Platform - Page Load Benchmark
-test/e2e/page-objects/benchmark           @MetaMask/wallet-api-platform-engineers
-test/e2e/playwright/benchmark             @MetaMask/wallet-api-platform-engineers
+# Wallet Integrations
+app/scripts/lib/rpc-method-middleware                                 @MetaMask/wallet-integrations
+shared/lib/caip25-caveat-merger.ts                                    @MetaMask/wallet-integrations
+test/e2e/page-objects/benchmark                                       @MetaMask/wallet-integrations
+test/e2e/playwright/benchmark                                         @MetaMask/wallet-integrations
+test/e2e/flask/multichain-api                                         @MetaMask/wallet-integrations
+# TODO CONSOLIDATE THE MIDDLEWARE BELOW INTO THE RPC-METHOD-MIDDLEWARE FOLDER
+app/scripts/lib/createRPCMethodTrackingMiddleware.js                  @MetaMask/wallet-integrations
+app/scripts/lib/createMetamaskMiddleware.js                           @MetaMask/wallet-integrations
+app/scripts/lib/createOnboardingMiddleware.js                         @MetaMask/wallet-integrations
+app/scripts/lib/createMetaRPCHandler.js                               @MetaMask/wallet-integrations
+app/scripts/lib/createEvmMethodsToNonEvmAccountReqFilterMiddleware.ts @MetaMask/wallet-integrations
+app/scripts/lib/createHyperliquidReferralMiddleware.ts                @MetaMask/wallet-integrations
+app/scripts/lib/metaRPCClientFactory.ts                               @MetaMask/wallet-integrations
+app/scripts/lib/middleware/                                           @MetaMask/wallet-integrations
+app/scripts/lib/createOriginThrottlingMiddleware.ts                   @MetaMask/wallet-integrations
+app/scripts/lib/createMainFrameOriginMiddleware.ts                    @MetaMask/wallet-integrations
+app/scripts/lib/createTracingMiddleware.ts                            @MetaMask/wallet-integrations