Wpb 24674 fix qr file picker and downloads

[emmaoke-w]

---

PR Submission Checklist for internal contributors

• The PR Title

  • conforms to the style of semantic commits messages¹ supported in Wire's Github Workflow²
  • contains a reference JIRA issue number like SQPIT-764
  • answers the question: If merged, this PR will: ... ³

• The PR Description

  • is free of optional paragraphs and you have filled the relevant parts to the best of your ability

---

What's new in this PR?

• Updated QR image creation in FileUtils to use MediaStore on Android Q+ for scoped-storage-safe writes to Downloads.
• Kept legacy Downloads path handling for older Android versions.
• Improved DocumentsUI picker handling so tests can switch to Downloads when the picker opens in Recent or another root.
• Hardened file action modal and download Save handling in conversation view to reduce flaky modal/button interactions

Issues

Briefly describe the issue you have solved or implemented with this pull request. If the PR contains multiple issues, use a bullet list.

• Fix QR file generation and selection reliability in Android UI tests, especially on newer Android versions and when the system picker opens outside Downloads.

Causes (Optional)

Briefly describe the causes behind the issues. This could be helpful to understand the adopted solutions behind some nasty bugs or complex issues.

Solutions

Briefly describe the solutions you have implemented for the issues explained above.

Dependencies (Optional)

If there are some other pull requests related to this one (e.g. new releases of frameworks), specify them here.

Needs releases with:

• GitHub link to other pull request

Testing

Test Coverage (Optional)

• I have added automated test to this contribution

How to Test

Briefly describe how this change was tested and if applicable the exact steps taken to verify that it works as expected.

Notes (Optional)

Specify here any other facts that you think are important for this issue.

Attachments (Optional)

Attachments like images, videos, etc. (drag and drop in the text box)

---

PR Post Submission Checklist for internal contributors (Optional)

• Wire's Github Workflow has automatically linked the PR to a JIRA issue

---

PR Post Merge Checklist for internal contributors

• If any soft of configuration variable was introduced by this PR, it has been added to the relevant documents and the CI jobs have been updated.

---

References

1. https://sparkbox.com/foundry/semantic_commit_messages
2. https://github.com/wireapp/.github#usage
3. E.g. feat(conversation-list): Sort conversations by most emojis in the title #SQPIT-764.

[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