[Bug]: Solana source tx never lands in Activity/toasts.

### Describe the bug

While testing RC 13.50.0 I noticed that when Bridging from Solana to other networks tha the toast `Transaction submitted` and `Transaction completed` won’t appear, and in the activity there is no transaction in progress. Hovewer the funds eventually arrive. Only way to fix that is to switch account back and forth or restart the Extension.

According to Cursor most likely the Solana snap (or Accounts / multichain-transactions) does not push the new tx into the currently selected account’s list. Switching account or restarting forces a refetch, the signature appears.

Here's some examples:
SOL-ETH (Robinhood)

https://github.com/user-attachments/assets/6d685903-b7f1-4d89-ba9f-d513e56b01dd

SOL-Monad

https://github.com/user-attachments/assets/ed32ff58-cb01-43f4-8c18-1989cde41d22

### Expected behavior

_No response_

### Screenshots/Recordings

_No response_

### Steps to reproduce

1. Bridge from Solana to any network
2. Notice that toast won't appear and tx is not found in the activity

### Error messages or log output

```shell

```

### Where was this bug found?

Internal release testing

### Version

13.50.0

### Build type

None

### Browser

Chrome

### Operating system

MacOS

### Hardware wallet

_No response_

### Additional context

_No response_

### Severity

_No response_

Reproduce a Solana-to-network bridge and observe the missing toast and activity entry. Start by tracing the Solana snap and the Accounts or multichain-transactions flow that should add the transaction to the selected account. Done means the submitted and completed toasts appear and the transaction is visible in Activity without switching accounts or restarting the extension.

Written by the indexing model from the issue text.