[vip-split] [Split Expense] Implement route changes in NewDot for updated Global Create

[mountiny]

Part of the Add Split expense to global create project, design doc.

Please, implement following sections of the design doc:

• Implement route changes in NewDot

This project is handled by our experienced C+: @shubham1206agra and @getusha. Please, refrain from posting proposals

[melvin-bot]

Triggered auto assignment to @trjExpensify (NewFeature), see https://stackoverflowteams.com/c/expensify/questions/14418#:~:text=BugZero%20process%20steps%20for%20feature%20requests for more details. Please add this Feature request to a GH project, as outlined in the SO.

[melvin-bot]

⚠️ It looks like this issue is labelled as a New Feature but not tied to any GitHub Project. Keep in mind that all new features should be tied to GitHub Projects in order to properly track external CAP software time ⚠️

[shubham1206agra]

@mountiny Let me know when route changes required in BE hit production. So I can run a clean up PR.

[mountiny]

Closing in favour of #40072 where once we merge the oldApp changes, we can clean up the routes