[PM-11133] Add preconcurrency annotations to imports

[KatherineInCode]

🎟️ Tracking

https://bitwarden.atlassian.net/browse/PM-11133

📔 Objective

This is part of the iOS 18 / Xcode 16 / Swift 6 effort

This adds @preconcurrency annotations to import statements to reduce warnings for now. In the future, we will want to remove these once the imported libraries have been updated; that work is captured also in PM-11195, though as @preconcurrency annotations become unnecessary they will turn into warnings.

⏰ Reminders before review

• Contributor guidelines followed
• All formatters and local linters executed and passed
• Written new unit and / or integration tests where applicable
• Protected functional changes with optionality (feature flags)
• Used internationalization (i18n) for all UI strings
• CI builds passed
• Communicated to DevOps any deployment requirements
• Updated any necessary documentation (Confluence, contributing docs) or informed the documentation team

🦮 Reviewer guidelines

• 👍 (:+1:) or similar for great changes
• 📝 (:memo:) or ℹ️ (:information_source:) for notes or general info
• ❓ (:question:) for questions
• 🤔 (:thinking:) or 💭 (:thought_balloon:) for more open inquiry that's not quite a confirmed issue and could potentially benefit from discussion
• 🎨 (:art:) for suggestions / improvements
• ❌ (:x:) or ⚠️ (:warning:) for more significant problems or concerns needing attention
• 🌱 (:seedling:) or ♻️ (:recycle:) for future improvements or indications of technical debt
• ⛏ (:pick:) for minor or nitpick changes

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 88.56%. Comparing base (2ed93f0) to head (5d4c776). Report is 4 commits behind head on main.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #855 +/- ## ======================================= Coverage 88.56% 88.56% ======================================= Files 611 611 Lines 30361 30361 ======================================= Hits 26888 26888 Misses 3473 3473 ```

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[github-actions[bot]]

Checkmarx One – Scan Summary & Details – 4d221d55-e111-43dc-8e88-169aac1e97b6

No New Or Fixed Issues Found

[KatherineInCode]

@fedemkr I'm really not sure, and I found that very strange as well. My googling for it didn't find anything useful on the subject, though.

Thinking about it, it probably makes sense to just close this, and handle each of them on a case-by-case basis to be honest (especially with the next commit I'm putting together, where I'm having to add even more of them)