Chain take order tx automatically after approval

[findolor]

Motivation

When a user takes an order that requires token approval, they currently have to:

1. Click "Take Order" and confirm the approval transaction
2. See a success toast telling them to click "Take Order" again
3. Click "Take Order" a second time to actually execute the trade

This two-click flow is cumbersome and confusing for users.

Solution

After the approval transaction is confirmed, the take order transaction is now automatically executed with fresh calldata — making it a single-click experience.

Key changes:

• Added executeTakeOrderWithFreshCalldata that fetches fresh calldata and executes the take order immediately after approval confirmation
• Chained the take order call inside the approval's onConfirm callback
• Removed the addToast dependency and the "click again" success toast
• Simplified onSubmit to return void instead of boolean since the modal now always closes after submission

Checks

By submitting this for review, I'm confirming I've done the following:

• made this PR as small as possible
• unit-tested any new functionality
• linked any relevant issues or PRs
• included screenshots (if this involves a front-end change)