Fix #7200: Tx Confirmation auto-dismisses after creating tx via asset details

[StephenHeaps]

Summary of Changes

• Fix Transaction Confirmation automatically dismissing after creating a send/swap transaction from asset details

This pull request fixes #7200

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:

Verify no regressions with popup (Aurora bridge, Biometrics popup):

1. Create a new wallet and verify 'Enable' toggle works on Biometrics prompt (dismisses the popup).
2. Restore wallet and verify 'Enable' toggle works on Biometrics prompt (dismisses the popup).
3. Open Portfolio and tap an Aurora Bridge supported asset (ex. Ethereum on Etheruem Mainnet).
4. Tap Bridge to Aurora
5. Verify the popup closes and opens the Rainbow Bridge url.
6. Open Portfolio and tap an Aurora Bridge supported asset (ex. Ethereum on Etheruem Mainnet).
7. Tap 'Do not show again' and verify the popup closes.

Verify no regression with #6460

1. Open Portfolio
2. Select any asset and tap Buy/Send/Swap on asset details
3. Change network or selected account and verify Buy/Send/Swap is not dismissed automatically

Verify bug fix:

1. Open Portfolio and tap an asset with a balance on one of your accounts
2. Tap send or swap
3. Tap Send or Swap the send or swap transaction
4. Verify Transaction Confirmation modal is displayed as expected, does not auto-dismiss.

Screenshots:

7200.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).