fix: multithreading violation when inserting a message on degraded conversation

[johnxnguyen]

…nversation

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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

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What's new in this PR?

Issues

When inserting a message on a degraded MLS conversation, the app crashes.

Causes

A log statement uses self.nonce which belongs to another context (view) than the one it's currently on (sync).

Solutions

Use the nonce property from the object from the sync context.

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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]

Test Results

       1 files   -        8     226 suites   - 711   12m 7s ⏱️ - 22m 38s
2 328 tests  - 5 549  2 328 ✔️  - 5 549  0 💤 ±0  0 ❌ ±0 
2 328 runs   - 5 560  2 328 ✔️  - 5 560  0 💤 ±0  0 ❌ ±0 

Results for commit 5705c8e. ± Comparison against base commit fb28393.

[datadog-wireapp]

Datadog Report

Branch report: fix/thread-violation
Commit report: b7ed8d1

✅ wire-ios-mono: 0 Failed, 0 New Flaky, 2328 Passed, 0 Skipped, 1m 19.25s Wall Time