[Due for payment 2025-09-30] [CLOSED FOR PROPOSALS] Refactor all the code in the app to reference `transaction.receipt.filename` instead

[tgolen]

Problem

The property is going to be fully migrated to be called transaction.receipt.filename, and it's now referred to as transaction.filename.

Solution

Add the transaction.receipt.filename property and update all references for transaction.filename to transaction.receipt.filename || transaction.filename to support both properties

Issue Owner

Current Issue Owner: @Christinadobrzyn

[melvin-bot]

Triggered auto assignment to @Christinadobrzyn (Bug), see https://stackoverflow.com/c/expensify/questions/14418 for more details. Please add this bug to a GH project, as outlined in the SO.

[Christinadobrzyn]

Just a heads up that I'm going to be ooo Sept 1 - Sept 4th. I'm not going to assign anyone new to this but if you need something from BZ please ping the team in the bug-zero Slack room.

[melvin-bot]

@tgolen, @Christinadobrzyn, @ikevin127, @shubham1206agra Uh oh! This issue is overdue by 2 days. Don't forget to update your issues!