[UX] Solana Send Amount Does Not Display USD Value Alongside Token Quantity

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## Issue Description:

When sending Solana tokens in MetaMask Extension, the send interface does not display the USD value alongside the token quantity by default. Users must manually toggle to the USD view to verify the fiat equivalent. This behavior is inconsistent with EVM sends, where both token and USD values are displayed simultaneously.

### Current Behavior:

* By default, only the token amount is shown on the Solana send interface.
* Users must manually toggle to see the USD equivalent, causing friction and inconsistency.

### Expected Behavior:

* Solana send interface should consistently display both the token quantity and its equivalent USD value side-by-side, matching existing EVM UX.

### Steps to Reproduce:

1. Open MetaMask Extension.
2. Initiate a send operation for a Solana-based token.
3. Enter a token amount.
4. Observe that only the token quantity is displayed, not the USD equivalent.
5. Manually toggle to USD to verify the fiat equivalent.

### Environment:

* MetaMask Extension version: 13.0
* Browser: Chrome, Firefox, Brave (observed across multiple browsers)

### Screenshots/Recordings:

### Suggested Solution:

* Ensure consistent UX across Solana and EVM send flows by displaying both token and USD values side-by-side by default.

### Additional Context:

Issue raised during recent UAT.

Start by reproducing the Solana send flow in the MetaMask Extension and compare its amount display with the existing EVM send flow. Trace where the token amount and USD value are rendered, then verify that both values appear by default without toggling.

Written by the indexing model from the issue text.