AppHang on FIRAnalytics initiateOnDeviceConversionMeasurementWithEmailAddress

### Description

Hello.

We have an AppHang caused by `+[FIRAnalytics initiateOnDeviceConversionMeasurementWithEmailAddress:]`.

We have `FirebaseAnalyticsOnDeviceConversion` included in our build.

It happens on all kind of devices and in all iOS versions.

It does not happen all the time. But it is slowly affecting more of our users.

### Reproducing the issue

We do not have a consistent way to reproduce this issue.

### Firebase SDK Version

10.24.0

### Xcode Version

15.4

### Installation Method

CocoaPods

### Firebase Product(s)

Analytics, Crashlytics, DynamicLinks

### Targeted Platforms

iOS

### Relevant Log Output

```shell
App Hang: The app was terminated while unresponsive

0 libsystem_kernel.dylib +0x1878 ___psynch_cvwait
1 libsystem_pthread.dylib +0x99a8 __pthread_cond_wait$VARIANT$mp
2 Foundation +0x3d0e0 -[NSOperation waitUntilFinished]
3 Foundation +0x3cee0 ___NSOPERATIONQUEUE_IS_WAITING_ON_AN_OPERATION__
4 Foundation +0xaae58 -[NSOperationQueue waitUntilAllOperationsAreFinished]
5 XXXXXXXXXXX +0xf714e0 +[APMAnalytics queueOperationWithBlockThenWait:]
6 XXXXXXXXXXX +0xf71c38 +[APMAnalytics setUserData:]
7 XXXXXXXXXXX +0xf6a588 +[FIRAnalytics initiateOnDeviceConversionMeasurementWithEmailAddress:]
8 XXXXXXXXXXX +0x2bbae8 @objc FirebaseCrashlyticsAnalyticsAdapter.setUserInfo(_:) (FirebaseCrashlyticsAnalyticsAdapter.swift:19:23)
9 P2Analytics +0x4418 -[AGAnalytics setUserInfo:] (AGAnalytics.m:89:13)
10 XXXXXXXXXXX +0xf66c0 -[AGAppDelegate applicationDidBecomeActive:] (AGAppDelegate.m:111:9)
11 XXXXXXXXXXX +0xe028 -[PRAppDelegate applicationDidBecomeActive:] (PRAppDelegate.m:553:5)
12 UIKitCore +0x26d394 -[UIApplication _stopDeactivatingForReason:]
13 UIKitCore +0x26ce1c -[_UISceneLifecycleMultiplexer _performBlock:withApplicationOfDeactivationReasons:fromReasons:]
14 UIKitCore +0x26cc10 -[_UISceneLifecycleMultiplexer _evalTransitionToSettings:fromSettings:forceExit:withTransitionStore:]
15 UIKitCore +0x26c7e0 -[_UISceneLifecycleMultiplexer uiScene:transitionedFromState:withTransitionContext:]
16 UIKitCore +0x26c6c0 ___186-[_UIWindowSceneFBSSceneTransitionContextDrivenLifecycleSettingsDiffAction _performActionsForUIScene:withUpdatedFBSScene:settingsDiff:fromSettings:transitionContext:lifecycleActionType:]_block_invoke
17 UIKitCore +0x8eba78 +[BSAnimationSettings(UIKit) tryAnimatingWithSettings:fromCurrentState:actions:completion:]
18 UIKitCore +0x97f7b4 __UISceneSettingsDiffActionPerformChangesWithTransitionContextAndCompletion
19 UIKitCore +0x12b138 -[_UIWindowSceneFBSSceneTransitionContextDrivenLifecycleSettingsDiffAction _performActionsForUIScene:withUpdatedFBSScene:settingsDiff:fromSettings:transitionContext:lifecycleActionType:]
20 UIKitCore +0x55f3ac ___64-[UIScene scene:didUpdateWithDiff:transitionContext:completion:]_block_invoke.196
21 UIKitCore +0x1f1738 -[UIScene _emitSceneSettingsUpdateResponseForCompletion:afterSceneUpdateWork:]
22 UIKitCore +0x1f15cc -[UIScene scene:didUpdateWithDiff:transitionContext:completion:]
23 UIKitCore +0x1f1428 -[UIApplicationSceneClientAgent scene:handleEvent:withCompletion:]
24 FrontBoardServices +0x3c3c -[FBSScene updater:didUpdateSettings:withDiff:transitionContext:completion:]
25 FrontBoardServices +0x3a94 ___94-[FBSWorkspaceScenesClient _queue_updateScene:withSettings:diff:transitionContext:completion:]_block_invoke_2
26 FrontBoardServices +0x6ef8 -[FBSWorkspace _calloutQueue_executeCalloutFromSource:withBlock:]
27 FrontBoardServices +0x6e20 ___94-[FBSWorkspaceScenesClient _queue_updateScene:withSettings:diff:transitionContext:completion:]_block_invoke
28 libdispatch.dylib +0x6477c __dispatch_client_callout
29 libdispatch.dylib +0x6cc8 __dispatch_block_invoke_direct$VARIANT$mp
30 FrontBoardServices +0x1040c __FBSSERIALQUEUE_IS_CALLING_OUT_TO_A_BLOCK__
31 FrontBoardServices +0x10048 -[FBSSerialQueue _targetQueue_performNextIfPossible]
32 FrontBoardServices +0x125fc -[FBSSerialQueue _performNextFromRunLoopSource]
33 CoreFoundation +0xc90e4 ___CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__
34 CoreFoundation +0xd4d58 ___CFRunLoopDoSource0
35 CoreFoundation +0x60018 ___CFRunLoopDoSources0
36 CoreFoundation +0x75134 ___CFRunLoopRun
37 CoreFoundation +0x79d1c _CFRunLoopRunSpecific
38 GraphicsServices +0x1994 _GSEventRunModal
39 UIKitCore +0x371348 -[UIApplication _run]
40 UIKitCore +0x370fc0 _UIApplicationMain
41 XXXXXXXXXXX +0x1d8f4 main (main.m:8:22)
42 dyld +0x14340 start
```

### If using Swift Package Manager, the project's Package.resolved

Expand Package.resolved snippet

```json

Replace this line with the contents of your Package.resolved.

```

### If using CocoaPods, the project's Podfile.lock

Expand Podfile.lock snippet

```yml

- Firebase (10.24.0):
- Firebase/Core (= 10.24.0)
- Firebase/Analytics (10.24.0):
- Firebase/Core
- Firebase/Core (10.24.0):
- Firebase/CoreOnly
- FirebaseAnalytics (~> 10.24.0)
- Firebase/CoreOnly (10.24.0):
- FirebaseCore (= 10.24.0)
- Firebase/Crashlytics (10.24.0):
- Firebase/CoreOnly
- FirebaseCrashlytics (~> 10.24.0)
- Firebase/DynamicLinks (10.24.0):
- Firebase/CoreOnly
- FirebaseDynamicLinks (~> 10.24.0)
- Firebase/Messaging (10.24.0):
- Firebase/CoreOnly
- FirebaseMessaging (~> 10.24.0)
- FirebaseAnalytics (10.24.0):
- FirebaseAnalytics/AdIdSupport (= 10.24.0)
- FirebaseCore (~> 10.0)
- FirebaseInstallations (~> 10.0)
- GoogleUtilities/AppDelegateSwizzler (~> 7.11)
- GoogleUtilities/MethodSwizzler (~> 7.11)
- GoogleUtilities/Network (~> 7.11)
- "GoogleUtilities/NSData+zlib (~> 7.11)"
- nanopb (< 2.30911.0, >= 2.30908.0)
- FirebaseAnalytics/AdIdSupport (10.24.0):
- FirebaseCore (~> 10.0)
- FirebaseInstallations (~> 10.0)
- GoogleAppMeasurement (= 10.24.0)
- GoogleUtilities/AppDelegateSwizzler (~> 7.11)
- GoogleUtilities/MethodSwizzler (~> 7.11)
- GoogleUtilities/Network (~> 7.11)
- "GoogleUtilities/NSData+zlib (~> 7.11)"
- nanopb (< 2.30911.0, >= 2.30908.0)
- FirebaseAnalyticsOnDeviceConversion (10.24.0):
- GoogleAppMeasurementOnDeviceConversion (= 10.24.0)
- FirebaseCore (10.24.0):
- FirebaseCoreInternal (~> 10.0)
- GoogleUtilities/Environment (~> 7.12)
- GoogleUtilities/Logger (~> 7.12)
- FirebaseCoreExtension (10.24.0):
- FirebaseCore (~> 10.0)
- FirebaseCoreInternal (10.24.0):
- "GoogleUtilities/NSData+zlib (~> 7.8)"
- FirebaseCrashlytics (10.24.0):
- FirebaseCore (~> 10.5)
- FirebaseInstallations (~> 10.0)
- FirebaseRemoteConfigInterop (~> 10.23)
- FirebaseSessions (~> 10.5)
- GoogleDataTransport (~> 9.2)
- GoogleUtilities/Environment (~> 7.8)
- nanopb (< 2.30911.0, >= 2.30908.0)
- PromisesObjC (~> 2.1)
- FirebaseDynamicLinks (10.24.0):
- FirebaseCore (~> 10.0)
- FirebaseInstallations (10.24.0):
- FirebaseCore (~> 10.0)
- GoogleUtilities/Environment (~> 7.8)
- GoogleUtilities/UserDefaults (~> 7.8)
- PromisesObjC (~> 2.1)
- FirebaseMessaging (10.24.0):
- FirebaseCore (~> 10.0)
- FirebaseInstallations (~> 10.0)
- GoogleDataTransport (~> 9.3)
- GoogleUtilities/AppDelegateSwizzler (~> 7.8)
- GoogleUtilities/Environment (~> 7.8)
- GoogleUtilities/Reachability (~> 7.8)
- GoogleUtilities/UserDefaults (~> 7.8)
- nanopb (< 2.30911.0, >= 2.30908.0)
- FirebaseRemoteConfigInterop (10.24.0)
- FirebaseSessions (10.24.0):
- FirebaseCore (~> 10.5)
- FirebaseCoreExtension (~> 10.0)
- FirebaseInstallations (~> 10.0)
- GoogleDataTransport (~> 9.2)
- GoogleUtilities/Environment (~> 7.10)
- nanopb (< 2.30911.0, >= 2.30908.0)
- PromisesSwift (~> 2.1)

```