[HOLD for payment 2024-07-26] [Upgrades] Connect Sage Intacct integration with the upgrade flow

[garrettmknight]

Part of https://github.com/Expensify/Expensify/issues/391954
Dependant on #43916

Once the Sage Intacct connection has been released to beta, we'll need to connect our upgrade flow to the Sage Intacct 'set up' button in the Accounting section of the workspace editor.

The NetSuite connection is under beta. To access:

1. Enable intacctOnNewExpensify beta
2. Login to staging.new.expensify.com
3. Navigate to Workspaces > Open a Workpace > More Features > Enable Accounting
4. In Accounting you'll see the Sage Intacct connection

Issue Owner

Current Issue Owner: @garrettmknight

[melvin-bot]

Current assignee @garrettmknight is eligible for the NewFeature assigner, not assigning anyone new.

[garrettmknight]

Still on hold pending BE issues