[PM-30147] Fix crash by adding weak self on FetchedResultsSubscription

[fedemkr]

🎟️ Tracking

PM-30147

📔 Objective

Added weak self for context perform on FetchedResultsSubscription to see if that fixes a crash happening sometimes when fetching CoreData.

⏰ 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

[github-actions]

Checkmarx One – Scan Summary & Details – cafb58cc-9ce3-4cb3-b64f-13feab23b29c

Great job! No new security vulnerabilities introduced in this pull request

[codecov]

Codecov Report

❌ Patch coverage is 85.71429% with 1 line in your changes missing coverage. Please review.
✅ Project coverage is 84.18%. Comparing base (33da013) to head (52f0b00).

Files with missing lines	Patch %	Lines
...e/Platform/Utilities/FetchedResultsPublisher.swift	85.71%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2215      +/-   ##
==========================================
- Coverage   85.47%   84.18%   -1.30%     
==========================================
  Files        1746     1987     +241     
  Lines      147479   162611   +15132     
==========================================
+ Hits       126059   136886   +10827     
- Misses      21420    25725    +4305     

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