fix(e2ei): set user display name correctly for the certificate downloaded file (WPB-8606)

[mchenani]

WPB-8606 [Android] When downloading another users certificate, saved file has wrong name

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PR Submission Checklist for internal contributors

• The PR Title

  • [x] conforms to the style of semantic commits messages¹ supported in Wire's Github Workflow²
  • [x] contains a reference JIRA issue number like SQPIT-764
  • [x] 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

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What's new in this PR?

Set display name for the certificate downloaded file.

Issues

The self user name was set even for other users cert.

Causes (Optional)

Wasn't handled.

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PR Post Submission Checklist for internal contributors (Optional)

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

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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.

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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.

[github-actions[bot]]

Test Results

820 tests   820 :white_check_mark:  7m 55s :stopwatch: 110 suites    0 :zzz: 110 files      0 :x:

Results for commit 3b611108.

:recycle: This comment has been updated with latest results.

[AndroidBob]

Build 4477 failed.

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APKs built during tests are available here. Scroll down to Artifacts!

[AndroidBob]

Build 4478 succeeded.

The build produced the following APK's:

• com.wire.android-v4.6.3(9515273)(9515273)-staging-compat.apk