[recnet-web][v1.9.1] Add announcement link to mobile admin menu

[swh00tw]

Description

The In-app announcement page is missed at mobile's admin menu.

Update the menu in this PR.

Related Issue

Notes

TODO

• [x] Paste the testing link: https://rec-57br6wvyn-recnet-542617e7.vercel.app/
• [x] Clear console.log or console.error for debug usage
• [ ] Update the documentation recnet-docs if needed
• [x] Version bump in package.json if needed

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Name	Status	Preview	Comments	Updated (UTC)
rec-net	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	May 21, 2024 1:38am

1 Ignored Deployment

| Name | Status | Preview | Comments | Updated (UTC) | | :--- | :----- | :------ | :------- | :------ | | **recnet-docs** | ⬜️ Ignored ([Inspect](https://vercel.com/recnet-542617e7/recnet-docs/4YVoXb883rgg5Jq6wVrsDBjsZGxm)) | [Visit Preview](https://recnet-docs-git-fix-add-announcement-to-01b5f7-recnet-542617e7.vercel.app) | | May 21, 2024 1:38am |