fix: links aren't shared via share extension - WPB-24816

[johnxnguyen]

WPB-24816 [iOS] [Share ext] Sharing website from Safari doesn't include link

Issue

When sharing a webpage via the share extension (such as from Safari) only the webpage title is included in the message and not the link.

This is because the webpage is the default text content and we must extract the url and append it to the text content, but a change introduced in #3373 causes the attachments to be loaded later than usual due to being put inside a Task. As a result, when the view appears and we check to append any possible urls, there are no attachments loaded yet and nothing is appended.

The solution is to move the loading of attachments outside of the Task (it's not necessary to have it in the task) so that it is done synchronously before the view appears.

Testing

1. Be logged in.
2. Open safari and try to share a webpage, such as www.apple.com
3. Before sending the message, assert that the text content includes the link.
4. Send the message, and check in the main app (sender or receiver) that the link is included in the sent message.

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Checklist

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

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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

1 881 tests   1 854 ✅  2m 2s ⏱️
  301 suites     27 💤
    1 files        0 ❌

Results for commit 7cd2c34.

♻️ This comment has been updated with latest results.

Summary: workflow run #25310888647
Allure report (download zip): html-report-29657-fix_sharing-links-wpb-24816

[netbe]

LGTM:)

[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