[Bug]: Creating a split transaction directly jumps to the first split line.

### What happened?

When a split transaction is created, the keyboard focus jumps immediately to the first split line instead of allowing the amount to be entered. I would expect the data entry flow to continue normally through the parent row and then cycle into the two split lines. This breaks the flow of data entry.

### How can we reproduce the issue?

Create a new transaction and set it to split (with the keyboard, select the split transaction option.) Keyboard focus then jumps directly to the newly added split line Payment column. Instead it should remain on the payment column on the parent row.

### Where are you hosting Actual?

Pikapods

### What browsers are you seeing the problem on?

Microsoft Edge, Desktop App (Electron)

### Operating System

Windows 11