[Due for payment 2025-09-30] Update copy in the Reject RHP

[garrettmknight]

Part of the Reject in NewDot project

Main issue: #52049

Feature Description

Discussion here
Copy update to the Reject RHP:

Manual Test Steps

1. As an approver, open an expense submitted to you
2. Tap More > Reject

Verify the copy matches this:

Automated Tests

[mananjadhav]

@garrettmknight Can you verify the Spanish translation?

[garrettmknight]

Updated!