Fix #8107: Fix incorrect account opening Send from Filecoin asset detail

[nuo-xu]

Summary of Changes

This pull request fixes #8107

Submitter Checklist:

• Unit Tests are updated to cover new or changed functionality
• User-facing strings use NSLocalizableString()
• New or updated UI has been tested across:
  • Light & dark mode
  • Different size classes (iPhone, landscape, iPad)
  • Different dynamic type sizes

Test Plan:

1. make sure you wallet has no filecoin account (create a new wallet)
2. turn on show test networks in Settings
3. go to FIL asset detail screen
4. click either buy or send button
5. you should get prompt with an alert asking you if you want to create an account
6. Click no an the alert to dismiss the alert, you will still be at the asset detail screen, and not be redirected to other screen.
7. Click yes to bring up account creation screen with Filecoin UI with correct Filecoin network preselected and no way to change it. (e.x if you comes from FIL on testnet asset details screen, account creation screen should pre-selected Filecoin Testnet instead of Mainnet.)
8. Either click cancel or swipe down to dismiss account creation screen, you will still be at the asset detail screen, and not be redirected to other screen.
9. Repeat step 4 - 6
10. Fill in all the information or leave them as they are then click Add to create a new account
11. Observe that the account creation screen will be dismissed and you will be redirected to Buy/Send screen depends on which button you clicked in step 8
12. Goes back to the asset screen again
13. repeat step 3
14. Observe this time, you will be redirect to Buy/Send screen depends on which button you clicked in step 12 since now we a filecoin account

=====================

1. make sure you wallet has no filecoin account (create a new wallet)
2. turn on show test networks in Settings
3. got buy/swap screen
4. open network selection and choose either Filecoin Mainnet or Filecoin Testnet
5. you should get prompt with an alert asking you if you want to create an account
6. Click no an the alert to dismiss the alert, you will still be at the network selection screen, and not be redirected to other screen.
7. Click yes to bring up account creation screen with Filecoin UI with correct Filecoin network preselected and no way to change it. (e.x if you comes from FIL on testnet asset details screen, account creation screen should pre-selected Filecoin Testnet instead of Mainnet.)
8. Either click cancel or swipe down to dismiss account creation screen, you will still be at the network selection screen, and not be redirected to other screen.
9. Repeat step 4 - 6
10. Fill in all the information or leave them as they are then click Add to create a new account
11. Observe that the account creation screen will be dismissed then network selection will be dismissed and the correct network has been selected.

Screenshots:

Simulator.Screen.Recording.-.iPhone.15.-.2023-09-21.at.13.30.43.mp4

Simulator.Screen.Recording.-.iPhone.15.-.2023-09-21.at.13.33.37.mp4

Reviewer Checklist:

• Issues include necessary QA labels:
  • QA/(Yes|No)
  • bug / enhancement
• Necessary security reviews have taken place.
• Adequate unit test coverage exists to prevent regressions.
• Adequate test plan exists for QA to validate (if applicable).
• Issue and pull request is assigned to a milestone (should happen at merge time).

[StephenHeaps]

One small bug when cancelling add account request via Add Account modal:

cancel.add.account.mp4

This might make the onCancelAddAccount: {} comment irrelevant if we use that closure to clean buy/send/swap destination.