default sort desc for tokens (#8405)

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## PR-Codex overview
This PR introduces a new sorting option for retrieving tokens, allowing results to be ordered in descending order based on their balance.

### Detailed summary
- Added a new property `sort_order` with the value `"desc"` to the object passed to `getV1Tokens`.

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<!-- This is an auto-generated comment: release notes by coderabbit.ai -->

## Summary by CodeRabbit

* **Improvements**
  * Token balances are now displayed in consistent descending order.

<!-- end of auto-generated comment: release notes by coderabbit.ai -->

Author: nischitpra

packages/thirdweb/src/insight/get-tokens.ts

@@ -59,6 +59,7 @@ export async function getOwnedTokens(args: {
     owner_address: [ownerAddress],
     token_address: tokenAddresses ? tokenAddresses : undefined,
     sort_by: "balance",
+    sort_order: "desc",
   };
 
   const result = await getV1Tokens({