[Better Expense Report View] Update the report preview action

[mountiny]

Problem

We are inconsistent with what report total we use in the report action buttons in the workspace chat when the user can, for example, submit a report of a certain value.

Solution

Let's clean this up to achieve this set-up:

• Submit: use overall report total
• Review: use overall report total
• Approve: use overall report total
• Pay: only use the amount that would actually be paid
• Export: we don't use the total here

Let's abstract this logic into a separate method and cover its logic with automated tests.

Note this means we would also include the held items values in the overall report total - as we already show the hold modal for the users to confirm before action is actually completed.

Issue Owner

Current Issue Owner: @JakubKorytko

[melvin-bot]

Triggered auto assignment to @johncschuster (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.

[mountiny]

cc @JmillsExpensify @shawnborton for vis

[shawnborton]

Looks good, thanks for making the issue!

[JakubKorytko]

I can take care of this, please assign it to me.

[trjExpensify]

Done!