Memory Leak with Fetch

Description

I have encountered a memory leak issue when using the fetch function in my React Native application. The memory usage gradually increases over time in iOS, leading to performance degradation and potential crashes.

React Native Version

0.72.4

Output of npx react-native info

  OS: macOS 13.5
  CPU: (10) arm64 Apple M1 Pro
  Memory: 758.45 MB / 16.00 GB
  Shell:
    version: "5.9"
    path: /bin/zsh
Binaries:
  Node:
    version: 18.16.0
    path: ~/.nvm/versions/node/v18.16.0/bin/node
  Yarn:
    version: 1.22.19
    path: /opt/homebrew/bin/yarn
  npm:
    version: 9.5.1
    path: ~/.nvm/versions/node/v18.16.0/bin/npm
  Watchman: Not Found
Managers:
  CocoaPods:
    version: 1.12.1
    path: /Users/clemens/.rvm/gems/ruby-2.7.5/bin/pod
SDKs:
  iOS SDK:
    Platforms:
      - DriverKit 22.4
      - iOS 16.4
      - macOS 13.3
      - tvOS 16.4
      - watchOS 9.4
  Android SDK: Not Found
IDEs:
  Android Studio: 2022.3 AI-223.8836.35.2231.10406996
  Xcode:
    version: 14.3.1/14E300c
    path: /usr/bin/xcodebuild
Languages:
  Java:
    version: 11.0.19
    path: /usr/bin/javac
  Ruby:
    version: 2.7.5
    path: /Users/clemens/.rvm/rubies/ruby-2.7.5/bin/ruby
npmPackages:
  "@react-native-community/cli": Not Found
  react:
    installed: 18.2.0
    wanted: 18.2.0
  react-native:
    installed: 0.72.4
    wanted: 0.72.4
  react-native-macos: Not Found
npmGlobalPackages:
  "*react-native*": Not Found
Android:
  hermesEnabled: true
  newArchEnabled: false
iOS:
  hermesEnabled: true
  newArchEnabled: false

Steps to reproduce

1.	Create a React Native project with the necessary dependencies.
2.	Implement a screen or component that utilizes the fetch function to make API requests.
3.	Monitor the memory usage of the application over an extended period.
4.	Observe that the memory usage consistently increases during and after making multiple fetch requests.

Snack, screenshot, or link to a repository

minimal example:
https://github.com/clemensmol/rn-fetch-memoryleak

まず、iOS 上で React Native 0.72.4 を使用して https://github.com/clemensmol/rn-fetch-memoryleak の最小例を実行し、fetch リクエストを繰り返している間のメモリを監視します。リクエストの挙動を追跡し、再現コードの実行前後でメモリを比較します。実証されたメモリ増加が解消され、再現時にリークが発生しなくなれば完了です。