[Bug]: Confusing experience for recently added Monad network

### Describe the bug

Confusing experience for Monad network on latest RC 7.60.0 (3133):

- The network is not added to the networks list (Monad testnet is displayed in custom networks, but not in Popular networks)
- Banner redirects to Portfolio page and there is no sap or bridge button
- If you're not familiar with Portfolio, you don't know how to swap, bridge, or see your tokens on Monad network

### Expected behavior

Have some info on Portfolio, guiding the user how to interact on Monad network

### Screenshots/Recordings

[Video](https://drive.google.com/file/d/1U064Nq6YKtv55aG-IoAi5zIHEl4xgE5x/view?usp=sharing)

### Steps to reproduce

1. Click on banner `Jump to Monad`
2. Try to do a swap and see your new tokens on Monad network

### Error messages or log output

```shell

```

### Detection stage

During release testing

### Version

7.60.0

### Build number

3133

### Build type

None

### Device

iPhone 15, Pixel 6 Pro

### Operating system

iOS, Android

### Additional context

_No response_

### Severity

_No response_

Reproduce the `Jump to Monad` banner flow on the listed iPhone 15 and Pixel 6 Pro environments, then inspect the networks list and Portfolio entry points. Confirm that Monad is discoverable and that the Portfolio experience explains how to swap, bridge, and view tokens; use the linked recording as the current behavior reference.

Written by the indexing model from the issue text.