Repository: flutter
Issue: [quick_actions] start event is reported twice with pre-warmed FlutterEngine
Labels: platform-android,engine,p: quick_actions,package,has reproducible steps,P2,found in release: 2.5,found in release: 2.6,team-android,triaged-android

## Steps to Reproduce

When flutter engine is pre-warmed, quick_actions reports the initial action twice

**Expected results:** 1 event, 1 alert

**Actual results:** 2 event, 2 alerts

Reproducible https://github.com/nt4f04unds-archive/issues/tree/flutter_89615
(you can clone it by command in the readme)

To reproduce, run the app in the `release` mode, close the activity, then open it with the quick action

<details>
  <summary>flutter doctor -v</summary>

```
[√] Flutter (Channel master, 2.6.0-1.0.pre.195, on Microsoft Windows [Version 10.0.19041.1165], locale ru-RU)
    • Flutter version 2.6.0-1.0.pre.195 at C:\dev\src\flutter
    • Upstream repository git@github.com:nt4f04und/flutter.git
    • FLUTTER_GIT_URL = git@github.com:nt4f04und/flutter.git
    • Framework revision e36c3a764c (6 hours ago), 2021-09-07 14:16:04 -0400
    • Engine revision 929931b747
    • Dart version 2.15.0 (build 2.15.0-82.0.dev)

[!] Android toolchain - develop for Android devices (Android SDK version 30.0.2)
    • Android SDK at C:\Users\danya\AppData\Local\Android\sdk
    X cmdline-tools component is missing
      Run `path/to/sdkmanager --install "cmdline-tools;latest"`
      See https://developer.android.com/studio/command-line for more details.
    X Android license status unknown.
      Run `flutter doctor --android-licenses` to accept the SDK licenses.
      See https://flutter.dev/docs/get-started/install/windows#android-setup for more details.

[√] Chrome - develop for the web
    • Chrome at C:\Program Files\Google\Chrome\Application\chrome.exe

[√] Visual Studio - develop for Windows (Visual Studio Community 2019 16.7.7)
    • Visual Studio at C:\Program Files (x86)\Microsoft Visual Studio\2019\Community
    • Visual Studio Community 2019 version 16.7.30621.155
    • Windows 10 SDK version 10.0.19041.0

[√] Android Studio (version 4.1)
    • Android Studio at C:\Program Files\Android\Android Studio
    • 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 1.8.0_242-release-1644-b01)

[√] IntelliJ IDEA Community Edition (version 2020.3)
    • IntelliJ at C:\Program Files\JetBrains\IntelliJ IDEA Community Edition 2020.3.3
    • 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 1.60.0)
    • VS Code at C:\Users\danya\AppData\Local\Programs\Microsoft VS Code
    • Flutter extension version 3.26.0

[√] Connected device (4 available)
    • Redmi Note 5 (mobile) • 40c9f14 • android-arm64  • Android 9 (API 28)
    • Windows (desktop)     • windows • windows-x64    • Microsoft Windows [Version 10.0.19041.1165]
    • Chrome (web)          • chrome  • web-javascript • Google Chrome 93.0.4577.63
    • Edge (web)            • edge    • web-javascript • Microsoft Edge 93.0.961.38

! Doctor found issues in 1 category.
```
</details>