Is there an existing issue for this?

• I have searched the existing issues
• I have read the guide to filing a bug

Steps to reproduce

this demo can reproduce
https://github.com/flutter/samples/tree/main/add_to_app/multiple_flutters/multiple_flutters_ios

Expected results

FlutterViewController can release normal

Actual results

FlutterViewController memory leak

Code sample

this demo can reproduce
https://github.com/flutter/samples/tree/main/add_to_app/multiple_flutters/multiple_flutters_ios

Screenshots or Video

Logs

[Paste your logs here]

Flutter Doctor output

[✓] Flutter (Channel stable, 3.10.0, on macOS 13.3.1 22E772610a darwin-arm64, locale zh-Hans-CN)
• Flutter version 3.10.0 on channel stable at /Users/tank/Development/fvm-cache/stable
• Upstream repository https://github.com/flutter/flutter.git
• Framework revision 84a1e90 (2 days ago), 2023-05-09 07:41:44 -0700
• Engine revision d44b5a94c9
• Dart version 3.0.0
• DevTools version 2.23.1
• Pub download mirror https://pub.flutter-io.cn
• Flutter download mirror https://storage.flutter-io.cn

[✓] Android toolchain - develop for Android devices (Android SDK version 33.0.0)
• Android SDK at /Users/tank/Library/Android/sdk
• Platform android-33, build-tools 33.0.0
• ANDROID_HOME = /Users/tank/Library/Android/sdk
• Java binary at: /Applications/Android Studio.app/Contents/jbr/Contents/Home/bin/java
• Java version OpenJDK Runtime Environment (build 17.0.6+0-17.0.6b802.4-9586694)
• All Android licenses accepted.

[✓] Xcode - develop for iOS and macOS (Xcode 14.2)
• Xcode at /Users/tank/Downloads/Xcode.app/Contents/Developer
• Build 14C18
• CocoaPods version 1.12.1

[✓] Chrome - develop for the web
• Chrome at /Applications/Google Chrome.app/Contents/MacOS/Google Chrome

[✓] Android Studio (version 2022.2)
• Android Studio at /Applications/Android Studio.app/Contents
• Flutter plugin can be installed from:
🔨 https://plugins.jetbrains.com/plugin/9212-flutter
• Dart plugin can be installed from:
🔨 https://plugins.jetbrains.com/plugin/6351-dart
• Java version OpenJDK Runtime Environment (build 17.0.6+0-17.0.6b802.4-9586694)

[✓] IntelliJ IDEA Ultimate Edition (version 2022.1.4)
• IntelliJ at /Applications/IntelliJ IDEA.app
• Flutter plugin can be installed from:
🔨 https://plugins.jetbrains.com/plugin/9212-flutter
• Dart plugin can be installed from:
🔨 https://plugins.jetbrains.com/plugin/6351-dart

[✓] VS Code (version 1.78.1)
• VS Code at /Applications/Visual Studio Code.app/Contents
• Flutter extension version 3.64.0

[✓] Connected device (4 available)
• Tank (mobile) • 00008120-0006248A2EF8C01E • ios • iOS 16.4.1 20E252
• iPhone 14 Pro Max (mobile) • D40CC530-5F72-4B9A-B820-84DBC57FB4E9 • ios • com.apple.CoreSimulator.SimRuntime.iOS-16-2 (simulator)
• macOS (desktop) • macos • darwin-arm64 • macOS 13.3.1 22E772610a darwin-arm64
• Chrome (web) • chrome • web-javascript • Google Chrome 113.0.5672.92

[✓] Network resources
• All expected network resources are available.

• No issues found!