FakeStore random crash

Describe the bug
FakeStore usually crashes randomly

To Reproduce
Steps to reproduce the behavior:

1. Open 'LogFox' and start logging
2. Wait for 30-40 minutes
3. See crash report

Expected behavior
There should be no random crash

Screenshots

System
Android Version: 13
Custom ROM: InterstellarUI 1.1 (RisingOS fork)

Additional context
Crash log:

FATAL EXCEPTION: main
Process: com.android.vending, PID: 7888
java.util.ConcurrentModificationException
	at java.util.HashMap$HashIterator.nextNode(HashMap.java:1441)
	at java.util.HashMap$KeyIterator.next(HashMap.java:1465)
	at org.microg.gms.common.MultiConnectionKeeper$Connection$1.onServiceConnected(SourceFile:53)
	at android.app.LoadedApk$ServiceDispatcher.doConnected(LoadedApk.java:2188)
	at android.app.LoadedApk$ServiceDispatcher$RunConnection.run(LoadedApk.java:2221)
	at android.os.Handler.handleCallback(Handler.java:942)
	at android.os.Handler.dispatchMessage(Handler.java:99)
	at android.os.Looper.loopOnce(Looper.java:201)
	at android.os.Looper.loop(Looper.java:288)
	at android.app.ActivityThread.main(ActivityThread.java:7943)
	at java.lang.reflect.Method.invoke(Native Method)
	at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:548)
	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:848)

Start with the crash log and inspect org.microg.gms.common.MultiConnectionKeeper, especially Connection$1.onServiceConnected, where the ConcurrentModificationException is reported. Reproduce by opening LogFox and logging for 30–40 minutes on Android 13, then trace the connection collection handling. Done means the reported random crash no longer occurs and the relevant behavior is covered by verification.