fix: prevent main app from blocking notification extension (take 3) - WPB-23511

[johnxnguyen]

WPB-23511 [iOS] NSE is often getting stuck and expiring

Issue

This is another attempt to fixing an issue where Core Crypto transactions can sometimes be suspended before completing, preventing CCs internal process locking mechanism from releasing the lock, resulting in other processes being unable to perform transactions.

The previous attempt #4689 used background tasks when performing Core Crypto transactions, but it was observed that it didn't always work. On top of that, the background task API was only available in the main app target and not the extensions.

This PR builds on the previous attempt by using the expiring activity API via ExpiringActivityManager, which is available in all app processes.

For more information about the issue and testing, see #4689 .

---

Checklist

• Title contains a reference JIRA issue number like [WPB-XXX].
• Description is filled and free of optional paragraphs.
• Adds/updates automated tests.

---

UI accessibility checklist

If your PR includes UI changes, please utilize this checklist:

• Make sure you use the API for UI elements that support large fonts.
• All colors are taken from WireDesign.ColorTheme or constructed using WireDesign.BaseColorPalette.
• New UI elements have Accessibility strings for VoiceOver.

[github-actions]

Test Results – WireSystem

86 tests   83 ✅  1s ⏱️
13 suites   3 💤
 1 files     0 ❌

Results for commit 7628673.

♻️ This comment has been updated with latest results.

[github-actions]

Test Results – WireDomain

  1 files  139 suites   15s ⏱️
547 tests 547 ✅ 0 💤 0 ❌
548 runs  548 ✅ 0 💤 0 ❌

Results for commit 7628673.

♻️ This comment has been updated with latest results.

[github-actions]

Test Results – WireShareEngine

15 tests   15 ✅  0s ⏱️
 4 suites   0 💤
 1 files     0 ❌

Results for commit 7628673.

♻️ This comment has been updated with latest results.

[github-actions]

Test Results – WireSyncEngine

1 106 tests   1 106 ✅  1m 20s ⏱️
  133 suites      0 💤
    1 files        0 ❌

Results for commit 7628673.

♻️ This comment has been updated with latest results.

[github-actions]

Test Results – WireRequestStrategy

965 tests   965 ✅  43s ⏱️
108 suites    0 💤
  1 files      0 ❌

Results for commit 7628673.

♻️ This comment has been updated with latest results.

[github-actions]

Test Results – WireDataModel

2 377 tests   2 377 ✅  4m 25s ⏱️
  245 suites      0 💤
    1 files        0 ❌

Results for commit 7628673.

♻️ This comment has been updated with latest results.

[samwyndham]

🙏

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[netbe]

LGTM;)