Bugfix-FXIOS-8420 Fix for Retain Cycle in all Function for Deferred<T> Aggregation

[amanjeetsingh150]

📜 Tickets

Jira Ticket
Github issue

💡 Description

Refactored the original implementation's recursive closure calls that introduced a potential for retain cycles, leading to memory leaks as attached in GitHub issue. The revised approach utilizes a non-recursive helper function, processNext, to process each Deferred object and append its result to an aggregate array. This method ensures that all Deferred objects are processed without retaining strong references that could prevent the Deferred objects and their associated closures from being deallocated.

Verified that no leaks exist after this refactoring. Check the resulting leak dump here which does not have any report referencing paths of ContentBlocker file.

📝 Checklist

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• Filled in the above information (tickets numbers and description of your work)
• Updated the PR name to follow our PR naming guidelines
• Wrote unit tests and/or ensured the tests suite is passing
• When working on UI, I checked and implemented accessibility (minimum Dynamic Text and VoiceOver)
• If needed I updated documentation / comments for complex code and public methods

[mergify]

This pull request has conflicts when rebasing. Could you fix it @amanjeetsingh150? 🙏

[lmarceau]

Hello, for the reason listed on the task #18668 I'll close this PR. Thank you!