[PATCH flutter-frontend v3 2/3] fix #4281: android: set taskAffinity="" on MainActivity

[Azharul Haque <haque@azharul.com>]

Recommended by flutter_web_auth_2 for the version this project uses,
to avoid a stray task appearing after the OpenID callback returns
control to MainActivity once the CallbackActivity added in the
following commit hands off. Harmless on its own ahead of that, since
there is currently only ever one activity in this app's task.

Signed-off-by: Azharul Haque <haque@azharul.com>
---
 android/app/src/main/AndroidManifest.xml | 1 +
 1 file changed, 1 insertion(+)

diff --git a/android/app/src/main/AndroidManifest.xml b/android/app/src/main/AndroidManifest.xml
index 66135eb..654f13d 100644
--- a/android/app/src/main/AndroidManifest.xml
+++ b/android/app/src/main/AndroidManifest.xml
@@ -12,6 +12,7 @@
             android:name="com.proxmox.app.pve_flutter_frontend.MainActivity"
             android:exported="true"
             android:launchMode="singleTop"
+            android:taskAffinity=""
             android:theme="@style/LaunchTheme"
             android:configChanges="orientation|keyboardHidden|keyboard|screenSize|locale|layoutDirection|fontScale|screenLayout|density|uiMode"
             android:hardwareAccelerated="true"
-- 
2.50.1 (Apple Git-155)